SPRING SPECIAL, Limited Time Offer. Save $3,000 on a New System Installation. While Supplies Last. More details...
Furnace Repair San Francisco
Fast, Professional HVAC Service Throughout San Mateo & San Francisco Counties
Furnace Repair in San Francisco: Quick Answers
How much does furnace repair cost in San Francisco
Furnace repair costs typically range from $150-$600 depending on the issue. Simple repairs like igniter replacement or thermostat fixes are on the lower end, while blower motor or control board repairs cost more. We provide upfront pricing before any work begins. Call (925) 578-3379 for a free San Francisco estimate — we serve all San Mateo & San Francisco Counties neighborhoods.
Should I repair or replace my old furnace?
Generally, if your furnace is over 15 years old and repairs exceed 50% of replacement cost, replacement is often the better investment. Newer furnaces are significantly more efficient, potentially saving you 20-30% on heating costs. Call (925) 578-3379 for a free San Francisco estimate — we serve all San Mateo & San Francisco Counties neighborhoods.
Why is my furnace blowing cold air?
Common causes include a dirty air filter restricting airflow, thermostat issues, pilot light or igniter problems, or an overheated system that triggered safety shutoff. Our technicians can diagnose the exact cause quickly. Call (925) 578-3379 for a free San Francisco estimate — we serve all San Mateo & San Francisco Counties neighborhoods.
How quickly can you repair my furnace?
We offer same-day furnace repair service for most issues. Emergency service is available 24/7 with typical response times of 2-4 hours. Most repairs are completed in a single visit. Our technicians serve Mission District and Noe Valley and all San Mateo & San Francisco Counties neighborhoods, with same-day appointments typically available for San Francisco residents.
Why Choose Professional Furnace Repair in San Francisco?
San Francisco's furnace repair market is unlike the rest of the Bay Area: the city's Victorian and Edwardian housing stock predominantly uses wall furnaces, floor furnaces, and early forced-air systems installed in buildings that were never designed for conventional ductwork. Mission District flats, Noe Valley Victorians, and Pacific Heights residences often have gravity-type wall furnaces as their primary heat source — systems that require specific diagnostic expertise that not all HVAC contractors maintain. Galaxy technicians are trained and equipped for both gravity-type and forced-air furnace systems.
Wall furnace repairs in San Francisco's Victorian housing are the most common furnace service call the city generates: thermocouple replacements in standing-pilot systems, pilot assembly cleanings, gas valve servicing, and burner port cleaning for units that have accumulated years of combustion deposits. These repairs are straightforward for technicians familiar with the equipment but require specialized knowledge that general HVAC contractors sometimes lack. Sunset District and Richmond neighborhood homes with more conventional forced-air systems have standard repair needs for equipment in the 15 to 25-year range. San Francisco permit requirements apply to certain furnace repair work; Galaxy navigates the permit process when it's required. For the city's dense Victorian housing: carbon monoxide detector placement near wall furnace installations is an important safety step that Galaxy recommends on every service call where these units are present.
San Francisco Climate & HVAC: San Francisco's microclimates are legendary: western neighborhoods (Sunset, Richmond) stay cool and foggy year-round (often 55-65°F), while eastern and southern neighborhoods (Mission, Potrero Hill, Noe Valley) enjoy significantly warmer, sunnier weather (often 10-20°F warmer). We recommend ductless heat pumps that provide efficient heating for cool SF mornings while offering optional cooling for those occasional warm days. SF's environmentally-conscious residents especially appreciate heat pumps' all-electric operation and zero fossil fuel emissions.
From Victorian and Edwardian homes in Pacific Heights and Noe Valley to modern condos in SOMA to classic San Francisco flats throughout the city, SF's historic and diverse housing requires specialized HVAC expertise.
San Francisco Neighborhoods We Serve for Furnace Repair
Our technicians know San Francisco's neighborhoods well — every street, housing era, and local quirk that affects your HVAC system. Here's where we regularly provide furnace repair services:
Mission District
Vibrant sunny neighborhood with Victorian homes and condos from 1900s-2020s, warmest SF microclimate at 75-85°F summers, diverse residents and tech professionals, historic properties needing ductless heat pump retrofits with AC
Noe Valley
Charming sunny family neighborhood with Edwardian and Victorian homes from 1900s-1980s, established families with children, warm protected microclimate, many historic properties with limited ductwork needing non-invasive ductless heat pump installations
Pacific Heights
Prestigious hilltop neighborhood with grand Victorian and Edwardian mansions from 1880s-1950s, affluent homeowners and professionals, moderate coastal climate, historic preservation requirements making ductless HVAC systems ideal for maintaining original character
Sunset District
Dense residential neighborhood near ocean with single-family homes and multi-unit buildings from 1930s-1970s, working families and diverse residents, persistently cool foggy climate, efficient heating essential, minimal AC needed
Richmond District
Dense neighborhood with multi-family buildings and single-family homes from 1920s-1970s, diverse working families and immigrants, persistently cool foggy climate, efficient heating priority, many properties needing modern energy-efficient heat pump upgrades
SOMA
Urban industrial district with warehouse lofts and modern condos from 1980s-2020s, young tech professionals, many industrial conversions with exposed ductwork, properties ideal for sleek modern ductless mini-split heat pump installations
Marina District
Upscale waterfront neighborhood with apartments and single-family homes from 1920s-1990s, young professionals and established residents, moderate coastal climate with cool Bay breezes, waterfront proximity with marine-layer influence needing efficient heating
What Furnace Repair Services Do You Offer in San Francisco?
San Francisco's iconic Victorian and Edwardian homes, along with its unique microclimates, create specialized HVAC needs. Most older SF homes lack central ductwork, making ductless heat pumps the ideal solution-delivering efficient heating and optional cooling without costly renovations or compromising architectural character. Many SF homeowners are upgrading from outdated wall heaters and baseboard systems to modern, efficient heat pumps.
Emergency Furnace Repair
When your furnace fails on the coldest night of the year, Galaxy is here. Our 24/7 emergency repair service ensures your San Francisco home stays warm. We stock common parts on our trucks for faster repairs.
- Available 24/7 for emergencies
- Most repairs completed same-day
- All major brands serviced
- Parts warranty included
Diagnostic & Troubleshooting
Our NATE-certified technicians use advanced diagnostic tools to identify furnace problems quickly and accurately. We'll explain the issue clearly and provide repair options with upfront pricing.
- Comprehensive system inspection
- Thermostat and control testing
- Electrical connection check
- Gas pressure and burner analysis
Blower Motor & Fan Repair
A failing blower motor can cause poor airflow, strange noises, or complete heating failure. We repair and replace blower motors, capacitors, and fan assemblies for all furnace types.
- Motor bearing and belt inspection
- Capacitor testing and replacement
- Fan blade balancing
- Airflow optimization
Ignition System Repair
Modern furnaces use electronic ignition or hot surface igniters. We diagnose and repair ignition problems quickly to restore reliable heating to your San Francisco home.
- Hot surface igniter replacement
- Flame sensor cleaning/replacement
- Gas valve inspection
- Safety switch testing
Heat Exchanger Inspection
A cracked heat exchanger is a serious safety concern. Our technicians perform thorough heat exchanger inspections and can recommend repair or replacement options.
- Carbon monoxide testing
- Visual and camera inspection
- Safety assessment
- Replacement recommendations if needed
Recent HVAC Work in San Francisco
Our technicians complete HVAC projects across San Francisco every week. Below are examples of recent work in your area — the kinds of jobs our team handles for San Francisco homeowners:
Noe Valley
Installed a Mitsubishi multi-zone heat pump outdoor unit at a classic 1920s Edwardian home in Noe Valley. The homeowners wanted efficient heating and occasional AC without disturbing the home’s original character or installing ductwork. The new inverter-driven system provides individual room control, efficient heating during cool SF mornings, and reduced energy costs by 42% compared to old baseboard heaters.
Mission District
Installed a Mitsubishi 30,000 BTU air handler discreetly mounted in a Mission District Victorian flat, paired with a high-efficiency outdoor heat pump. The new system replaced aging wall heaters and window AC units, providing efficient heating, cooling for sunny Mission days, whisper-quiet operation, and a 38% reduction in energy costs.
Pacific Heights
Installed a new American Standard 30,000 BTU high-efficiency furnace and air handler in a Pacific Heights Victorian, integrated with concealed ductwork to preserve the home’s historic character. The advanced system provides efficient heating year-round with optional AC pairing, operates nearly silently, and qualified the homeowner for Bay Area rebates.
South of Market
Rooftop installation of a Mitsubishi heat pump outdoor unit at a San Francisco home with downtown city views. Rooftop placement is a common Galaxy specialty in dense SF neighborhoods where ground-level space is limited — our crews are trained to safely rig, anchor, and weatherproof equipment on steep, multi-story SF roofs while protecting the building envelope.
Furnace Repair in Nearby San Mateo & San Francisco Counties Cities
Galaxy also provides furnace repair throughout San Mateo & San Francisco Counties. If you have friends or family in a neighboring city, we serve them too:
Why Do San Francisco Homeowners Trust Galaxy?
Same-Day Repair Service
We understand heating emergencies can't wait. Our technicians are available for same-day furnace repair throughout the Bay Area.
All Furnace Brands Serviced
From American Standard and Carrier to Lennox and Trane, our NATE-certified technicians repair all major furnace brands.
Upfront, Transparent Pricing
No surprise charges. We provide a complete diagnosis and quote before any work begins.
NATE-Certified Technicians
Our technicians hold NATE certification, the industry's highest standard for HVAC expertise and professionalism.
What San Francisco Customers Say About Our Furnace Repair Services
"I had a major breakdown with my heating system in the middle of winter in Noe Valley. I called Galaxy Heating & Air Conditioning, and they were at my door within an hour. The technician was friendly and really knew his stuff. They got my old system up and running again, and I was so relieved to have heat back just in time for a cold snap!"
Emily R.
Noe Valley Homeowner
"Living in the Mission District, summer can get sweltering, especially in my old condo. I decided it was time for a new AC unit and reached out to Galaxy. They helped me pick the right model for my space and installed it quickly. Now, I can enjoy the summer without melting away!"
Carlos M.
Mission District Homeowner
"In Pacific Heights, I’ve always struggled with high energy bills due to my aging HVAC system. I called Galaxy for a maintenance check, and they were honest about what needed to be replaced versus what could be fixed. They helped me install a more energy-efficient unit that has already made a noticeable difference. I'm actually excited to see my next bill!"
Samantha T.
Pacific Heights Homeowner
Frequently Asked Questions About Furnace Repair in San Francisco
How much does furnace repair cost in the Bay Area?
Furnace repair costs typically range from $150-$600 depending on the issue. Simple repairs like igniter replacement or thermostat fixes are on the lower end, while blower motor or control board repairs cost more. We provide upfront pricing before any work begins.
Should I repair or replace my old furnace?
Generally, if your furnace is over 15 years old and repairs exceed 50% of replacement cost, replacement is often the better investment. Newer furnaces are significantly more efficient, potentially saving you 20-30% on heating costs.
Why is my furnace blowing cold air?
Common causes include a dirty air filter restricting airflow, thermostat issues, pilot light or igniter problems, or an overheated system that triggered safety shutoff. Our technicians can diagnose the exact cause quickly.
How quickly can you repair my furnace?
We offer same-day furnace repair service for most issues. Emergency service is available 24/7 with typical response times of 2-4 hours. Most repairs are completed in a single visit.
Related Resources for San Francisco Homeowners
Recent Furnace Repair Work in San Francisco
Here are examples of recent HVAC projects completed in San Francisco neighborhoods similar to yours:
Installed a Mitsubishi multi-zone heat pump outdoor unit at a classic 1920s Edwardian home in Noe Valley. The homeowners wanted efficient heating and occasional AC without disturbing the home’s original character or installing ductwork. The new inverter-driven system provides individual room control, efficient heating during cool SF mornings, and reduced energy costs by 42% compared to old baseboard heaters.
Installed a Mitsubishi 30,000 BTU air handler discreetly mounted in a Mission District Victorian flat, paired with a high-efficiency outdoor heat pump. The new system replaced aging wall heaters and window AC units, providing efficient heating, cooling for sunny Mission days, whisper-quiet operation, and a 38% reduction in energy costs.
Installed a new American Standard 30,000 BTU high-efficiency furnace and air handler in a Pacific Heights Victorian, integrated with concealed ductwork to preserve the home’s historic character. The advanced system provides efficient heating year-round with optional AC pairing, operates nearly silently, and qualified the homeowner for Bay Area rebates.
Rooftop installation of a Mitsubishi heat pump outdoor unit at a San Francisco home with downtown city views. Rooftop placement is a common Galaxy specialty in dense SF neighborhoods where ground-level space is limited — our crews are trained to safely rig, anchor, and weatherproof equipment on steep, multi-story SF roofs while protecting the building envelope.
Ready to Schedule Furnace Repair in San Francisco?
Call us today or fill out our online form to get started with expert HVAC service