Bonsall, California Air Conditioning Services

When you have an air conditioning or heating problem, you want it fixed fast.  But you also want someone knowledgeable, skilled, and reputable.  With three generations of experience, we are the HVAC experts you can count on in Bonsall, California.  Call us for a fast-response same-day appointment. We also offer affordable maintenance programs for residential and commercial clients so you can avoid costly repairs.

Central Air Conditioning

We know that when you need an air conditioner repair, you’re uncomfortable, and it can be frustrating waiting for a repairman who’s way behind schedule.  So we’ll arrive at your home right when we say we will, with everything necessary to make just about any air conditioning repair.  If your equipment is no longer up to the job or is way past its warranty, we can also provide an expert replacement as well as new air conditioning installations.


Heating is important in staying safe and comfortable.  So we provide fast, affordable emergency heater repair services 24 hours a day for Bonsall homes.  With no overtime charges.

We’re experienced with furnace repairs, central heating, and heat pumps — so we can repair or install just about any type of gas or electric furnace.  If it’s time for a replacement installation, we’ll be happy to advise you regarding the best system for your home.  You may have more options than you think, although it’s sometimes impractical to add forced-air ducts for a heating system if your home doesn’t already have them.

Did You Know?  Furnaces are far more efficient than they used to be.  AFUEs (annual fuel utilization efficiencies) for today’s models are around 80%, and may even exceed 90%.  But the most efficient isn’t necessarily the most cost-effective.


Check Out Our Reviews

Third Gen HvacThird Generation Heating & Air Conditioning
4 Stars - Based on 31 User Reviews
Third Gen HvacThird Generation Heating & Air Conditioning Inc.
5 Stars - Based on 11 User Reviews

Preventive Maintenance

Like a car tune-up, preventive air conditioning and heating maintenance keeps your system more reliable, running better for greater capacity, and lasting longer.  Our residential and commercial plans are tailored to each home or business.  Once in the spring for air conditioning and once in the fall for heating we’ll inspect, clean, adjust, test, measure, lubricate, and protect dozens of points.  We can also clean and deodorize duct-work.  You’ll have the peace of mind knowing that everything’s in top condition before each cooling and heating season.  Plus you’ll have our highest repair priority and a 10% savings on all repairs.

Did You Know?  In the typical US home, a bit more than half of all energy use goes to heating and air conditioning.  But there’s a potential for big savings without compromising comfort.

Commercial HVAC

Our owner started his career specializing in commercial HVAC services, so he’s an expert in HVAC repair and installation.  We recognize the importance of comfort for peak productivity, not to mention process control, and the impact of energy efficiency on your bottom line.  Our prompt emergency repair team stands ready 24 hours a day in Bonsall and beyond to minimize disruptions to your business.  We would be pleased to consult with you regarding a new or replacement installation that’s tailored to your particular facility.

Choose ThirdGen HVAC

Our company has been an independent family-owned business for over 50 years.  Owner/operators Rick and Sierra Chidester are the third generations of heating & air conditioning experts.  Our fleet of well-stocked vehicles and highly-trained technicians mean a prompt arrival, accurate diagnosis, and efficient work.  We come highly recommended — just check our reviews and references.

We service, install and repair Amana, American Standard, Carrier, Coleman, Comfort Maker, Goodman, Lennox, Payne, Rheem, Trane, and more.  And of course, we’re fully licensed and insured

Bonsall Names

Bonsall was originally called Mount Fairview, then changed its name to Osgood in 1871.  The current name came from a local minister, James A. Bonsall, whose name was submitted in a local contest to rename the city in 1890.  Officially a “census-designated place” Bonsall’s population reached 3,982 in the 2010 census.