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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

Lakeside HVAC – Heating & Air Conditioning

Heating, Ventilation, & Air Conditioning in Lakeside

Lakeside HVACAce Contractors proudly offers the very best when it comes to heating, air conditioning, and plumbing services in the Lakeside area. We call Southern California home and have done so for a very long time. We have no interest in cheating or beating our neighbors out of money. We understand that every cent you make is important to you and we want to show you that every cent you pay us is worth it. Check out our testimonials page to see for yourself just a few of the 250,000 happy customers who have come to love us during the 50 years we have been in business. We provide HVAC services such as air conditioning repair and maintenance, duct inspection and sealing, and a whole range of plumbing services, too. Call today to find out how we can come to your aid on a variety of projects.

HVAC Contractor – Top Quality Service Repair for Residential and Commercial Properties

Has your central or window air conditioner jumped ship right when the warm weather starts to set in? No problem. While it may be an issue to you, it’s no problem at all for us to come in and repair your existing unit or replace it with a new one if necessary. We want to satisfy you and win your business for the rest of the time you remain in the Lakeside area. Join our 250,000 happy customers today!

  • 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

Water Heater Service When You Need It Most

While most plumbing professionals do a reasonably good job of coming in and completing the task at hand, they may take forever to schedule you in and some problems are not easily overlooked. Thankfully, Ace Contractors provides 24-hour emergency service to all of our Lakeside customers at no extra charge. No matter what time of the day or night that disaster strikes, you can dial 1-888-231-1086 and a team will be there in a jiffy.

lakeside heating ventilation and cooling

La Mesa HVAC
Ramona air conditioning & heating repair

Diamond Ace Contractors