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– Professionally Trained Hvac Technicians
– Residential & Commercial – 24 Hours / 7 Days
– Always Prompt, Honest, & Reliable


Over 250,000 Satisfied Clients
Read what customers have to say



  • Heating and Air Repair San Diego
  • Thermostats
  • Whole House Air Purification
  • Apartments & Condominiums
  • Scheduled Maintenance
  • Furnace Repair in San Diego
  • Service Calls – Fast Response
  • Duct Inspection & Sealing
  • Heat Pumps & Energy Savings
  • Humidifiers
  • Zoning for Savings & Comfort
  • Property Management Services
  • Garbage Disposals
  • Tankless Water Heaters
  • Sinks, Bathtubs & Toilets
  • Low Water Pressure
  • Earthquake Shut-off Valves
  • Backflow Prevention
  • Water Heaters
  • Shower Repair & Replacements
  • Water Softener Installation
  • Re-piping With Copper
  • Burst Pipes
  • Gas Lines


“I called them up at 10pm because we had a sudden burst pipe in our home. They were there within the hour, the owner assured us that it was going to be great and explained to us exactly what they were doing. They really went above and beyond our expectations. All of our stuff was put back together perfectly, and we were VERY happy with how it all turned out. Definitely our new favorite company.” -Mark G. San Diego, CA


“We needed our AC system repaired on a very hot day. They arrived promptly less than hour after I called them and fixed our home AC system without delay. Their prices were very reasonable and the technician that they sent was really friendly & knowledgeable. I fully recommend Ace Contractors!” -Albert H. San Diego, CA

San Diego’s Best HVAC Contractors For Heating, Air Conditioning, and more

Ace San Diego HVACAce Contractors is a fully accredited BBB company that is locally owned and operated in San Diego HVAC Air & Heating. We provide full HVAC, Air conditioning, and heating repair and maintenance services for residential and commercial properties. We take pride in providing all of our loyal customers with high quality workmanship at low affordable prices so that you can save more money.

Ace San Diego Heating Repair and Maintenance Service

When the winter months arrive, San Diego can definitely get chilly. Before starting up your heater, we recommend that you get a trained HVAC heating professional to inspect your heater and ensure that everything is working as intended. We provide no obligations free estimates for any heating maintenance or repairs that need to be done. We also provide complimentary safety inspections for your home and will highlight any potential trouble spots in your home for you. If you have a heating emergency, give us a call now, we are open 24 hours, 7 days a week, ready to service you.

Ace San Diego Air Conditioning Maintenance and Repair Services

In the summer months San Diego can get hot and humid. Diamond Ace Contractors has been helping San Diego Residents to stay cool for over 50 years. Our trained HVAC Air conditioning contractors are among the best, each one is fully certified, trained, insured, and equipped to handle any type of situation that you might encounter. If you currently do not have a home air conditioning unit installed and would like one for your home, give us a call. We can send a trained HVAC air conditioning specialist to your home to go over potential options with you. If you already have an AC unit in your home and need it repaired, give us a call. We also offer discounted annual service contracts that many of our customers prefer due to their ease and simplicity, ask our staff about this when you call.

Tank and Tankless Water Heater Installation, Maintenance, and Repair

Not only do we provide services for Heating and cooling, we also service and install water heaters, both tankless and traditional tank heaters. If you currently have an emergency with your water heater call us now, we can dispatch a specialist to your location immediately. Instead, if you are looking to upgrade your traditional tank water heater to a tankless water heater our contractors can help you with that too. Often, we can help you get special pricing as we can work directly with manufacturers to help you secure a lower price and help you save more money on your water heater upgrade.

Diamond Ace Contractors
5052 Genesee Ave
San Diego