Whole House Generator Installation Guide Los Angeles

Why Los Angeles Homeowners Need Backup Generators

Power outages in Los Angeles are no longer rare inconveniences. Between Public Safety Power Shutoffs (PSPS) during wildfire season, extreme heat waves stressing the electrical grid, and aging infrastructure, LA homeowners face unprecedented threats to power reliability. During summer 2024, California experienced multiple grid emergencies with rolling blackout warnings as temperatures exceeded 110 degrees. When wildfires threaten, utilities proactively shut off power for days, leaving neighborhoods without electricity. For Los Angeles families, these outages mean spoiled food worth hundreds of dollars, disabled security systems, loss of heating or air conditioning during extreme weather, and inability to work from home. Shaffer Construction, Inc. has helped hundreds of LA homeowners protect their families and properties with professionally installed backup generators that automatically activate when the grid fails.

Beyond convenience, generators protect substantial investments. Refrigerators and freezers can lose $500 to $1,000 in food during multi-day outages. Medical equipment supporting family members with health conditions requires reliable power. For remote workers, outages translate directly to lost income. Additionally, homes with backup generators command premium prices in the real estate market, as emergency preparedness becomes a critical feature for buyers. Shaffer Construction specializes in electrical infrastructure upgrades for Los Angeles homes, ensuring your generator integrates seamlessly with your existing electrical system while meeting all code requirements for safety and reliability.

Portable vs Standby Generators: Understanding Your Options

Homeowners considering backup power face a choice between portable and standby generators, each with distinct advantages and limitations. Portable generators cost $500 to $2,000, run on gasoline or propane, produce 3,000 to 10,000 watts, and require manual setup via extension cords or manual transfer switches. While economical, they have significant drawbacks: manual operation during outages, frequent refueling, loud operation at 70-90 decibels, and inability to safely power entire home electrical systems simultaneously. For comprehensive whole-house protection, portable generators fall short.

Standby generators are permanently installed outdoor units that automatically activate within seconds when utility power fails. Ranging from 7 to 150 kilowatts, they connect directly to natural gas lines or propane tanks for unlimited runtime, operate through automatic transfer switches providing seamless power transitions, and can power entire homes including air conditioning and all appliances. Installed on concrete pads near electrical panels and gas meters, they operate much more quietly at 50-65 decibels. While costs range from $5,000 to $15,000+ depending on size and complexity, the peace of mind and comprehensive protection justify the investment for most homeowners. Shaffer Construction recommends standby generators for LA homeowners wanting reliable, automatic backup power, with professional installation ensuring proper integration similar to our residential electrical panel upgrade services throughout Los Angeles.

Generator Sizing: Calculating the Right Capacity

Properly sizing your generator is critical for reliable performance without unnecessary expense. Generator capacity, measured in kilowatts (kW), must match your home's electrical demands during outages. Shaffer Construction uses professional load calculations accounting for total wattage of essential equipment plus surge power when motors start. The sizing process identifies essential loads: refrigerator/freezer (700-1,200 watts), lighting circuits, heating/cooling systems (3,500-5,000 watts), security systems, garage door openers (550-1,100 watts), and home office equipment. Optional loads include electric ranges (5,000-8,000 watts), dryers (5,000-6,000 watts), pool equipment, and EV chargers.

To calculate required capacity, list each appliance's running wattage from equipment labels, add all running wattages together, identify the highest starting wattage (motors require 2-3x running wattage initially), add starting surge to total running wattage, and multiply by 1.25 for safety margin. For example: 15,000 watts running + 3,000 watts surge = 18,000 watts × 1.25 = 22,500 watts, requiring approximately a 22-25kW generator.

Most LA homes fall into predictable categories: smaller homes under 1,500 square feet with 100-amp service need 13-16kW generators, medium homes 1,500-2,500 square feet with 150-200amp service require 17-20kW units, larger homes over 2,500 square feet with 200amp service wanting whole-house backup need 22-26kW generators, and estates over 4,000 square feet may require 30-48kW or larger systems. Homes requiring substantial capacity often benefit from electrical panel upgrades ensuring adequate capacity. Shaffer Construction provides complimentary load analysis using professional equipment to measure actual demand, ensuring proper sizing without wasteful oversizing.

Fuel Options: Natural Gas, Propane, and Diesel

Fuel selection significantly impacts convenience, operating costs, environmental footprint, and reliability during extended outages. Los Angeles homeowners choose between three primary options, each with distinct advantages. Natural gas generators connect to existing utility gas lines, providing unlimited runtime as long as gas remains available. This makes natural gas the most popular residential choice where infrastructure exists. Benefits include clean burning with lower emissions, no on-site fuel storage or refilling, stable pricing, and elimination of fuel degradation concerns. LADWP maintains extensive gas infrastructure throughout the region, making connections straightforward. Natural gas generators operate seamlessly through PSPS events and most outages, automatically drawing fuel without homeowner intervention.

However, natural gas has one critical vulnerability: gas supply can be interrupted during major earthquakes or infrastructure damage. California's seismic activity poses real risks to underground distribution systems, prompting some homeowners to choose propane for complete infrastructure independence. Propane generators use on-site storage tanks (typically 250-500 gallons) providing independence from utilities. Propane has indefinite shelf life when properly stored, burns cleaner than diesel, operates more quietly than diesel generators, and works reliably in all weather. The trade-off is lower energy density requiring larger tanks for equivalent runtime—a 500-gallon tank provides approximately 5-7 days continuous operation for a 20kW generator before requiring refilling.

Diesel generators represent the traditional choice for commercial and large residential installations requiring maximum reliability and extended runtime. Diesel provides more energy per gallon than propane or natural gas, making it most efficient for heavy-duty continuous operation. Diesel units typically last longer than gasoline or natural gas models and handle high loads continuously with minimal maintenance. However, disadvantages for LA residential applications include higher noise levels (65-75 decibels vs. 55-65 for natural gas/propane), increased emissions problematic in dense neighborhoods, on-site fuel storage requiring regular maintenance, significant price volatility, and more frequent maintenance requirements. Shaffer Construction typically recommends natural gas for LA homeowners with gas service available, propane for homes without gas service or seeking fuel independence, and diesel only for large estates requiring maximum runtime and power output.

Automatic Transfer Switches: The Critical Safety Component

Every standby generator installation requires an automatic transfer switch (ATS), the sophisticated device managing transitions between utility and generator power. The ATS performs three critical functions: continuously monitoring utility power for outages, automatically starting generators and transferring loads when power fails, and safely returning to utility power once service restores. Transfer switches are required by National Electrical Code and California regulations to prevent backfeeding, the dangerous condition where generator power flows backward into utility lines, potentially electrocuting utility workers or damaging generators when utility power returns. The switch creates a mechanical or electronic barrier ensuring generator and utility power never connect simultaneously.

Automatic transfer switches come in two primary configurations. Whole-house transfer switches connect between utility meters and main electrical panels, allowing generators to power entire electrical systems up to rated capacity. These work well for properly sized generators handling full home loads but require generators large enough to power everything simultaneously. Load management transfer switches offer sophisticated control, using programmable circuits to prioritize loads and shed non-essential circuits when generators reach capacity. For example, systems might ensure refrigerators, heating, and lighting always receive power while temporarily shedding dryers or pool pumps if air conditioning and ovens run simultaneously. This allows smaller, less expensive generators while maintaining essential functions.

Transfer switch installation requires professional expertise ensuring proper sizing, correct wiring, adequate grounding, and code-compliant integration with existing panels. Shaffer Construction uses only UL-listed switches sized to handle full generator amperage with appropriate safety margins. Modern switches include sophisticated electronics providing adjustable time delays for generator startup, preventing rapid cycling during brief utility fluctuations, and return transfer delays ensuring utility power stability before switching back. For homeowners concerned about electrical capacity, our team assesses whether installations would benefit from residential electrical panel upgrade services accommodating modern transfer switch technology.

Installation Process, Permits, and LADWP Coordination

Professional generator installation is a multi-phase project typically taking three to six weeks from consultation to commissioning, depending on permitting timelines and equipment availability. Shaffer Construction follows a systematic approach ensuring code compliance and reliable operation. The process begins with comprehensive site assessment evaluating electrical panel capacity, identifying optimal generator placement considering noise and setbacks, assessing fuel supply options, measuring distances for electrical and fuel runs, and identifying site preparation requirements. During this visit, we perform detailed load calculations using professional equipment measuring actual consumption for accurate sizing.

Following assessment, we provide detailed proposals including generator size and model recommendations, fuel type recommendations, transfer switch specifications, complete installation scope, itemized cost breakdowns, and projected timelines. Once approved, we handle all permit applications with Los Angeles Department of Building and Safety (LADBS), submitting electrical plans, generator specifications, load calculations, and contractor licensing documentation. Permit review typically takes two to four weeks. Physical installation requires two to three days including site preparation and concrete pad installation, electrical and fuel connections with transfer switch installation, and final connections with comprehensive testing and homeowner training. After completion, we coordinate mandatory LADBS inspections verifying electrical and gas installations meet code requirements.

For natural gas installations, proper LADWP coordination ensures gas service supports additional load. Typical 20kW natural gas generators consume 200-250 cubic feet per hour at full load, potentially exceeding existing gas meter capacity requiring upgrades. We determine existing meter capacity (typically 250-2,000 cubic feet per hour residential), calculate total gas demand including the generator, and request meter upgrades if needed—a process taking two to four weeks. LADWP provides first gas service upgrades at no charge in most cases. We handle all LADWP communication and gas line installation from meters to generator locations, ensuring code-compliant connections. Our comprehensive approach mirrors our commitment to quality across all projects, from complex installations to routine residential electrical safety inspections.

Installation Costs and Budget Planning

Understanding complete cost pictures helps LA homeowners budget appropriately for generator installations. Total installed costs typically range from $5,000 to $15,000+ depending on capacity, site conditions, fuel type, and complexity. Cost breakdowns include generator equipment ($2,500 for basic 13kW units to $8,000+ for 48kW models with advanced features), automatic transfer switches ($800-$2,500 depending on capacity and features), installation labor ($2,000-$4,000 for standard installations), concrete pad and site preparation ($500-$1,500), electrical materials ($300-$800), gas line installation ($400-$1,200 depending on distance), and permits/inspections ($300-$600 for LADBS electrical and gas permits).

Several factors increase costs beyond typical ranges: electrical panel upgrades if existing panels lack capacity ($2,500-$5,000+), long distances from panels to generators requiring extensive conduit runs, difficult site access requiring special equipment or extensive trenching through hardscape, gas service upgrades beyond standard LADWP allowances, propane tank installation ($1,500-$3,500 depending on size and above/below ground placement), sound attenuation enclosures for noise-sensitive areas ($1,000-$3,000), and premium features like remote monitoring and WiFi connectivity ($500-$1,500). Most LA homes with straightforward installations and adequate electrical capacity expect $7,000-$12,000 total costs for appropriately sized natural gas standby generators with professional installation and full permitting.

When evaluating costs, consider long-term value and protection. Beyond preventing food spoilage and lost productivity, generators offer increased home resale value (buyers pay $5,000-$10,000 premiums for homes with backup power), potential insurance discounts, protection of smart home and security investments, and business continuity for remote workers. Generator installation provides decades of protection with proper maintenance—quality manufacturers like Generac, Kohler, and Briggs & Stratton design systems for 20-30 years service life. Shaffer Construction offers transparent, detailed pricing with no hidden fees, providing comprehensive estimates covering all equipment, labor, materials, permits, and inspections. Many homeowners combine installations with other improvements like upgrading obsolete electrical panels, creating comprehensive electrical modernization projects.

Maintenance Requirements and Sound Ordinances

Standby generators require regular maintenance for reliable operation, but requirements are straightforward with professional support. Modern units need professional service annually or every 200 hours operation, whichever comes first. For most residential installations accumulating few operating hours through weekly exercise cycles and occasional outages, annual maintenance suffices. Shaffer Construction offers comprehensive maintenance programs including oil and filter changes, spark plug inspections, battery load testing and replacement, air filter replacements, coolant inspections for liquid-cooled units, fuel system inspections, transfer switch testing, load bank testing verifying rated power output, control panel inspections for error codes and software updates, and overall visual inspections. Weekly automatic exercise cycles (15-20 minutes) maintain readiness by circulating oil, maintaining battery charge, preventing fuel system degradation, and identifying potential problems before failures during actual outages.

Generator noise requires consideration as Los Angeles enforces noise ordinances maintaining neighborhood quality of life. LA Municipal Code Section 112.01 establishes maximum permissible noise levels: 50 decibels nighttime (10 PM-7 AM) and 65 decibels daytime, measured at property lines. Most residential standby generators operate 55-70 decibels at 23 feet measurement distance. Air-cooled generators (up to 26kW) typically produce 60-67 decibels, while liquid-cooled generators (above 22kW) operate more quietly at 55-62 decibels due to enclosed design. Sound levels decrease approximately 6 decibels for each doubling of distance, making placement distance from property lines and neighboring homes important. For noise-sensitive locations, strategies include strategic placement away from property lines and bedrooms, sound attenuation enclosures reducing noise 10-15 decibels ($1,000-$3,000), and vibration isolation pads preventing transmission through concrete. Shaffer Construction evaluates noise considerations during site assessments, recommending generator models and placement strategies minimizing noise impact while ensuring code compliance.

Best Generator Brands for Los Angeles Homes

Selecting quality generators from reputable manufacturers ensures reliable performance, long service life, and strong warranty support. Shaffer Construction works with leading manufacturers offering robust products specifically designed for home backup power. Generac Power Systems, North America's largest residential generator manufacturer, offers the most extensive product line. Their Guardian series air-cooled generators (9-26kW) feature compact footprints, straightforward installation, competitive pricing, and True Power technology for clean electricity. Protector series liquid-cooled generators (25-150kW) offer quieter operation and enhanced durability for larger homes. Generac includes Mobile Link remote monitoring via smartphone apps, 5-year limited warranties, and extensive Los Angeles dealer networks for parts availability and service.

Kohler Power Systems brings commercial-grade engineering to residential backup power with PowerCommand control systems offering sophisticated load management. Their residential generators (8-150kW, both air and liquid-cooled) feature premium construction with corrosion-resistant enclosures ideal for coastal LA environments. Kohler operates exceptionally quietly, often 2-5 decibels quieter than competitors, and includes OnCue Plus management systems with smartphone connectivity. They offer 5-year limited warranties with strong customer support. While commanding 10-20 percent price premiums over Generac, many homeowners consider superior build quality and quieter operation worth the investment. Briggs & Stratton's Symphony II product line features air-cooled models (12-26kW) offering value pricing typically 10-15 percent lower than Generac with simplified installation and InteliNano controllers.

Cummins Power Generation offers premium residential generators with commercial-grade reliability, particularly QuietConnect series liquid-cooled generators (13-80kW) featuring exceptionally quiet operation, superior build quality designed for 20-30 years service life, and advanced Digital Control systems. Cummins commands premium pricing (20-30 percent above Generac) but provides exceptional long-term value for homeowners prioritizing maximum quality. When selecting brands and models, Shaffer Construction recommends considering warranty coverage, parts availability and service network density in LA, published sound ratings for ordinance compliance, control panel features and remote monitoring capabilities, fuel efficiency ratings affecting operating costs, and build quality. We typically recommend Generac Guardian series for reliability, features, pricing, and strong local support, Kohler for quietest operation and premium build quality, and Cummins QuietConnect for absolute top-tier performance and longevity.

Frequently Asked Questions

How long can whole house generators run continuously?

Natural gas standby generators run indefinitely as long as utility gas service remains available, ideal for extended outages lasting days or weeks. Propane generators are limited by tank size—typical 500-gallon tanks provide 5-7 days continuous operation for 20kW generators at 50 percent average load. Manufacturers design residential standby generators for extended runtime with proper maintenance, though we recommend brief shutdown periods every few days during extremely long outages for oil circulation and system checks.

How much does it cost to run a whole house generator?

Operating costs depend on generator size, fuel type, and load. A 20kW natural gas generator running at 50 percent load consumes approximately 100-125 cubic feet natural gas per hour. At typical LADWP rates around $1.50 per therm (100 cubic feet), this equals roughly $1.50-$2.00 per hour, or $36-$48 per day continuous use. Propane costs are typically 20-30 percent higher per BTU equivalent. Most homeowners run generators only during actual outages, making monthly costs negligible aside from brief weekly exercise cycles.

Do I need to turn off my main breaker when generators run?

No. Automatic transfer switches handle all switching between utility and generator power automatically and safely. Never manually manipulate main breakers or electrical components during generator operation. Transfer switches are specifically designed preventing backfeeding and ensuring safe operation without homeowner intervention. Simply allow automated systems to manage all power transitions.

Can I install generators myself to save money?

California requires licensed electricians to perform generator installations. DIY installation violates state electrical contractor licensing laws, city building codes requiring permits and inspections, and manufacturer warranty terms requiring professional installation. Improper installation creates serious safety hazards including electrocution risks for utility workers from backfeeding, carbon monoxide poisoning from incorrect exhaust placement, fire hazards from improper gas connections, and electrical system damage from incorrect transfer switch installation. Modest savings aren't worth substantial risks and legal violations.

Will generators increase my home's value?

Yes. Backup generators are increasingly viewed as essential features by homebuyers, particularly in areas prone to power outages from PSPS events, wildfires, or infrastructure issues. Real estate professionals estimate properly installed standby generators add $5,000-$10,000 to home resale values, often recovering most or all installation costs while providing years of protection and peace of mind.

What size generator do I need for a 2,000 square foot home?

Most 2,000 square foot homes with standard appliances and central air conditioning need 17-22 kilowatt generators for comprehensive whole-house backup power. However, proper sizing requires professional load calculations based on specific electrical demands including appliances, HVAC systems, and high-demand equipment like EV chargers or pool pumps. Shaffer Construction provides complimentary load analysis determining optimal generator sizes.

How often do generators need maintenance?

Professional maintenance is recommended annually or every 200 hours operation, whichever comes first. For most homeowners, annual service suffices. Maintenance includes oil and filter changes, battery testing, spark plug inspections, and comprehensive system checks. Generators perform weekly automatic exercise cycles maintaining readiness between service intervals.

Protect Your Home with Professional Generator Installation

As power outages become more frequent across Los Angeles due to PSPS events, wildfire threats, extreme weather, and aging infrastructure, whole house generators have transformed from luxury amenities to essential protective systems for homeowners valuing reliability and security. Professionally installed standby generators provide automatic backup power within seconds of utility failure, maintaining normal lifestyles, protecting valuable possessions, and ensuring family safety and comfort during emergencies lasting hours, days, or weeks.

Shaffer Construction, Inc. brings decades of electrical expertise and hundreds of successful generator installations to every project, ensuring backup power systems are properly sized, safely installed meeting all code requirements, seamlessly integrated with existing electrical infrastructure, and supported by comprehensive maintenance programs for long-term reliability. From initial consultation and load analysis through permitting, installation, testing, and ongoing service, our licensed electricians manage every aspect with professionalism, attention to detail, and commitment to quality. We work with leading manufacturers including Generac, Kohler, Briggs & Stratton, and Cummins providing equipment options matching budgets, performance requirements, and site conditions.

Don't wait for the next PSPS event or major outage. Contact Shaffer Construction today to schedule your complimentary generator consultation and site assessment. Our team will evaluate your home's electrical capacity, recommend optimal generator sizes and fuel types, provide transparent pricing with detailed cost breakdowns, and answer all questions about installation timelines, permitting, and long-term operation. Call us at 323-642-8509 or email hello@shaffercon.com to get started. Visit our website at www.shaffercon.com to learn more about our comprehensive residential electrical services including generator installation, panel upgrades, dedicated circuits, electrical safety inspections, and all electrical solutions Los Angeles homeowners need to protect their properties and families. When power reliability matters, trust Shaffer Construction to deliver professional generator installation providing decades of dependable backup power and genuine peace of mind.