• Name:
  • Phone:
  • Message:
  • CODE: captcha

– 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

HVAC Oceanside

HVAC Oceanside

Ace Contractors has called Oceanside and the greater San Diego area home for more years than you can count. We have continually provided generations and generations of homeowners and business owners with top quality HVAC and plumbing services that can’t be beat. 50 years is the number that we have been in this business and we do not take our position lightly. We focus on providing you with the best products and services in the area for your residence, retail store, real estate property, or commercial and industrial settings. Come one, come all! Ace Contractors can be there whenever you call thanks to our 24-hour emergency service guarantee.

HVAC Contractor –  High-Quality Repairs, Installation and Maintenance Services for Homes and Businesses

  • Less worries because you know you are in good hands
  • Increased air quality in your homes and businesses
  • Greater energy efficiency along with potential decreases in utility bills
  • Less repair bills plus we only charge you for what you need!

  • Emergency Service
  • Open 24 Hours
  • Same-Day Service
  • Residential & Commercial
  • Thermostat Upgrades (Wifi)
  • Light Commercial HVAC
  • Duct Cleaning
  • Exhaust Fans
  • Whole Home Re-Ductings
  • Preventative HVAC Maintenance Packages
  • Air Conditioning
  • Split Systems
  • Ductless Systems
  • Heating
  • HVAC Systems
  • Cooling Systems
  • Air Conditioner Installation
  • Central AC
  • AC Repair
  • Chillers
  • HVAC Controls
  • Equipment System Integrations
  • Energy Management
  • Furnace Installation & Repair
  • Pilot
  • Heat Pumps
  • Hybrid Systems
  • Wall Heater
  • Floor Heaters
  • Boilers
  • Air Purification
  • Air Filter Cleaning
  • Electronic Air Cleaners
  • UV Light Systems

Top-of-the-line Heater Maintenance

If you live in Oceanside, California and have a heater that has gone kerplunk, you shouldn’t be dialing any number besides 1-888-231-1086! You are in just the right location to delegate all your heating projects to our professionally trained and capable experts.

Unbeatable Air Conditioner Maintenance

Problems with the AC can cause you to want to pull out your hair. Don’t wait another minute to call our team to the rescue. Reps are standing by the phone right now just waiting to offer assistance to you. We can answer any questions or concerns, direct you to our super helpful Tips page on the website, or arrange to have a crew sent to your property anytime of the day for on-site emergency service.

Superb Water Heater Maintenance

Whether your water heater needs a replacement in the form of one of the new tankless versions, or simply needs some tender love and care, we are here for you. Water heaters are one of many of our plumbing specialty services. Call for help now!

oceanside heating ventilation and cooling

Diamond Ace Contractors