Servicing San Francisco for Commercial HVAC and Indoor Air Quality Since 1995

  • Free Proposal

    Free Humidifier Install Proposal

    • We will come to your home • Analyze your new whole-home humidifier installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidaysy • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

Hear What Others Are Saying About CastleWorks Home Services

CastleWorks Home Services
CastleWorks Home Services
4.7
Based on 1096 reviews
powered by Google
Dave d'ArtenayDave d'Artenay

01:25 08 Jan 23
He replaced a water heater and did a great job. He was very polite and cleaned up the area after completion. He was very accurate for the time needed to complete the job. He... explained everything before and after the job. Thanks!read more

Craig FalkenhagenCraig Falkenhagen

02:07 21 Oct 22
Gerardo arrived promptly, clearly explained the options we had for a new replacement water heater and then got to work on the installation. His courtesy and professional... demeanor were exemplary. We would gladly have him come back again. Thanks a million Gerardo! Perfect service and performance.read more

Jamie VargyasJamie Vargyas

18:30 24 Sep 22
Andras was courteous, efficient and very clean. He explained everything in detail and answered all my questions knowledgeably. Castle is top notch professional service. My... new go water heater comes with a 10 year warranty. Awesome work!!!read more

Chris ParraChris Parra

20:11 16 Sep 22
I would highly recommend this business. we had an emergency water heater leak, and they arrive to fix it very promptly within two hours. The technician, Julian Did a... fantastic job, explained everything that needed to be done, and did a great job. I highly recommend him and the company.read more

Jerry ShawJerry Shaw

22:48 28 Aug 22
They replaced our water heater and installed some new venting and water piping. Also, new valves. Julian was great at what he did as well as being a very nice person. The... company was somewhat pricey though, as I was charged $4,287.00 for the new equipment and installation. Also, I wasn’t given an itemized receipt, although I was told I could call the company and ask for one.read more

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Choosing the Right HVAC Services for Your Business Near San Francisco

  • Struggling to find the right technicians for your company’s HVAC installation?
  • Our experienced and licensed HVAC team can install large units with ease
  • Ensure your business’s heating, ventilation and air conditioning system is installed properly
  • Hire our technicians to guarantee a safe, efficient setup and will run optimally right away

Whether you know exactly what you’re looking for from an HVAC installation and repair service in San Francisco or need help to determine what services you need, our experienced professionals will help you make the right choice.

844-484-5175
Serviceman Repairing Commercial HVAC System

  • Free Proposal

    Free Humidifier Install Proposal

    • We will come to your home • Analyze your new whole-home humidifier installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidaysy • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $75

    Sale Price

    $75 Air Duct Repair Diagnostic

    • We will come to your home • Diagnose the problem with your air ducts • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Air Duct Replacement Proposal

    • We will come to your home • Provide a comprehensive report on the replacement • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $75

    Sale Price

    $75 A/C Repair Diagnostic

    • We will come to your home • Diagnose the problem with your A/C system • Present personalized solutions on what to do next • 100% satisfaction guaranteed • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $125

    Sale Price

    $125 A/C Tune-Up

    • If your system breaks down within 6 months of service we’ll come out at no cost to diagnose the problem • We’ll give you priority scheduling service • Credit your original maintenance charge toward the repair! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free A/C Install Proposal

    • We will come to your home • Analyze your new A/C installation needs • Present personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $75

    Sale Price

    $75 Air Duct Sealing Service Proposal + Comprehensive Report

    • We will come to your home • Diagnose the Problem with Your Air Ducts • Provide a Comprehensive Report on the Problem • Perform Our Air Duct Sealing Service • 100% satisfaction guaranteed • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • NO Service Call Fees. NO Dispatch Fees.

    Offer Expires 3/31/

  • $75

    Sale Price

    $75 Mini-Split Repair Diagnostic

    • We will come to your home • Diagnose the problem with your ductless mini-split system • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $199

    Sale Price

    $199 Mini-Split Tune-Up

    • Get our total comfort system tune-up • If your system breaks down within 6 months of service; • We’ll come out at no cost to figure out the problem • We’ll give you priority scheduling service • Credit the original maintenance charge toward the repair! • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Ductless Mini-Split Install Proposal

    • We will come to your home • Analyze your new ductless mini-split installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $75

    Sale Price

    $75 Heat Pump Repair Diagnostic

    • We will come to your home • Diagnose the problem with your heat pump • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Heat Pump Install Proposal

    • We will come to your home • Analyze your new heat pump installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $125

    Sale Price

    $125 Heat Pump Tune-Up

    • We will come to your home to perform a system tune-up. • If your system breaks down within 6 months of service: • We’ll come out at no cost to diagnose the problem • We’ll give you priority scheduling service • Credit your original maintenance charge toward the repair! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Heating System Install Proposal

    • We will come to your home • Analyze your new heating system installation needs • Present you with personalized solutions on what to do next • Financing options available! • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $125

    Sale Price

    $125 Heating System Tune-Up

    • We will come to your home • If your system breaks down within 6 months of service: • We’ll come out at no cost to diagnose the problem • We’ll give you priority scheduling service • Credit your original maintenance charge toward the repair! • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $75

    Sale Price

    $75 Heating System Repair Diagnostic

    • We will come to your home • Diagnose the problem with your heating system • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • If we do the work we will waive the diagnostic charge! • 100% satisfaction guaranteed • Same day service available on most days in most areas. Call for details! • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $75

    Sale Price

    $75 Furnace Repair Diagnostic

    • We will come to your home • Diagnose the problem with your furnace system • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $125

    Sale Price

    $125 Furnace Tune-Up

    • We will come to your home to perform a system tune-up. • If your system breaks down within 6 months of service: • We’ll come out at no cost to diagnose the problem • We’ll give you priority scheduling service • Credit your original maintenance charge toward the repair! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Furnace Install Proposal

    • We will come to your home • Analyze your new furnace installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Smart Thermostat Install Proposal

    • We will come to your home • Analyze your new smart thermostat installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $75

    Sale Price

    $75 Whole-Home Dehumidifier Repair Diagnostic

    • We will come to your home • Diagnose the problem with your dehumidifier • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Dehumidifier Install Proposal

    • We will come to your home • Analyze your new whole-home dehumidifier installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $75

    Sale Price

    $75 Whole-Home Humidifier Repair Diagnostic

    • We will come to your home • Diagnose the problem with your humidifier • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $99

    Sale Price

    $99 Whole-Home Dehumidifier Repair Diagnostic

    • We will come to your home • Diagnose the problem with your dehumidifier • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Dehumidifier Install Proposal

    • We will come to your home • Analyze your new whole-home dehumidifier installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $99

    Sale Price

    $99 Whole-Home Humidifier Repair Diagnostic

    • We will come to your home • Diagnose the problem with your humidifier • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Humidifier Install Proposal

    • We will come to your home • Analyze your new whole-home humidifier installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $99

    Sale Price

    $99 Air Duct Repair Diagnostic

    • We will come to your home • Diagnose the problem with your air ducts • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Estimate

    Free Air Duct Replacement Proposal

    • We will come to your home • Inspect the air duct design in your home • Present you with a comprehensive report with our findings • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $99

    Sale Price

    $99 A/C Repair Diagnostic

    • We will come to your home • Diagnose the problem with your A/C system • Present personalized solutions on what to do next • 100% satisfaction guaranteed • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $125

    Sale Price

    $125 A/C Tune-Up

    • We will come to your home • If your system breaks down within 6 months of service: • We’ll come out at no cost to diagnose the problem • We’ll give you priority scheduling service • Credit your original maintenance charge toward the repair! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free A/C Install Proposal

    • We will come to your home • Analyze your new A/C installation needs • Present personalized solutions on what to do next • Financing Options Available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $99

    Sale Price

    $99 Air Duct Sealing Service Proposal + Comprehensive Report

    • We will come to your home • Diagnose the Problem with Your Air Ducts • Provide a Comprehensive Report on the problem • Perform Our Air Duct Sealing Service • 100% satisfaction guaranteed • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • NO Service Call Fees. NO Dispatch Fees.

    Offer Expires 3/31/

  • $99

    Sale Price

    $99 Mini-Split Repair Diagnostic

    • We will come to your home • Diagnose the problem with your ductless mini-split system • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Ductless Mini-Split Install Proposal

    • We will come to your home • Analyze your new ductless mini-split installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $99

    Sale Price

    $99 Heat Pump Repair Diagnostic

    • We will come to your home • Diagnose the problem with your heat pump • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Heat Pump Install Proposal

    • We will come to your home • Analyze your new heat pump installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $125

    Sale Price

    $125 Heat Pump Tune-Up

    •If your system breaks down within 6 months of service we’ll come out at no cost to diagnose the problem • We’ll give you priority scheduling service • Credit your original maintenance charge toward the repair! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Heating System Install Proposal

    • We will come to your home • Analyze your new heating system installation needs • Present you with personalized solutions on what to do next • Financing options available! • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $125

    Sale Price

    $125 Heating System Tune-Up

    • We will come to your home • If your system breaks down within 6 months of service: • We’ll come out at no cost to diagnose the problem • We’ll give you priority scheduling service • Credit your original maintenance charge toward the repair! • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $99

    Sale Price

    $99 Heating System Repair Diagnostic

    • We will come to your home • Diagnose the problem with your heating system • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • If we do the work we will waive the diagnostic charge! • 100% satisfaction guaranteed • Same day service available on most days in most areas. Call for details! • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $99

    Sale Price

    $99 Furnace Repair Diagnostic

    • We will come to your home • Diagnose the problem with your furnace system • Provide a comprehensive report on the problem • Present you with personalized solutions on what to do next • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • $125

    Sale Price

    $125 Furnace Tune-Up

    • We will come to your home •If your system breaks down within 6 months of service: • We’ll come out at no cost to diagnose the problem • We’ll give you priority scheduling service • Credit your original maintenance charge toward the repair! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Furnace Install Proposal

    • We will come to your home • Analyze your new furnace installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/

  • Free Proposal

    Free Smart Thermostat Install Proposal

    • We will come to your home • Analyze your new smart thermostat installation needs • Present you with personalized solutions on what to do next • Financing options available! • Hours are 7AM to 5PM Monday- Friday. Closed Weekends and Holidays • 100% satisfaction guaranteed • NO service call fees. NO dispatch fees.

    Offer Expires 3/31/