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TRUSTED BY FOOTHILL RANCH, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon1.1k+
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Foothill Ranch - Updated Nov 2026

Avatar for Air Duct Professionals
Air Duct Professionals
4.7(
1,518
)
Air Ducts & Vents - Clean

Serving Foothill Ranch, CA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Great. My daughter contracted Air Duct Professionals to do her home. James, the technician, was professional, knowledgeable and did a quality job. I contacted Air Duct to do my home and requested James. James arrived on time and did an excellent job. He also helped me with a leak with my HVAC Condenser and diagnosed and fixed the issue."
Additional Photos
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+11

Response time1 day
2 neighbors recently requested a quote
Recommended by92%of homeowners
NT Electric & HVAC
4.7(
47
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceElectric Furnace / Forced Air Heating System - Install+8 more

Serving Foothill Ranch, CA and surrounding areas

Approved

In business since 2011

Customers say: Quick response

"Nathan is very experienced and knowledgeable. He responds quickly to every text and phone call. He and his crew show up on time, work diligently, are respectful, and focused, and do all the little details like caulking and matching paint. They installed a 5 unit mini-split system and totally completed in 2 days. The price was very good and he even passed on the incentive from the manufacturer. There are always unexpected hiccups in every construction / installation job and there was no complaining, no extra charges, he just handled them quickly and efficiently. All in all, excellent work, excellent service. We highly recommend NT Electric and HVAC."
Power supply
Response time4 hrs
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Trinity Heating and AC
Trinity Heating and AC
5.0(
46
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceGas Furnace / Forced Air Heating System - Repair+4 more

Serving Foothill Ranch, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Warranties offered

"Trinity HVAC got in touch with me right away and their communication was excellent, letting me know when someone could come out and they showed up as scheduled. Chris inspected the unit inside and outside to assess the situation then thoroughly explained the problem before doing the work. He provided a follow-up email with the invoice showing the detailed items that were repaired and photos."
Furnace Before
AC After
Furnace After
AC Before
Before - Furnace

+83

Response time3 hrs
Response rate98%
31 neighbors recently requested a quote
Avatar for Breeze AC Solutions Inc.
Breeze AC Solutions Inc.
4.9(
16
)
Central A/C - InstallCentral A/C - Service or RepairElectric Furnace / Forced Air Heating System - Repair+3 more

Serving Foothill Ranch, CA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Great guys really took the time to fully advise us on our options. We went with service, cleaning and small repair instead of new system. Can't be happier. System works great and really nice guys who take pride in a good job . My only options for ac work from now on is from Ahl air conditioning. Nice job guy's"
11 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for Easy Air LLC
Easy Air LLC
4.9(
26
)
Air Ducts & Vents - CleanCentral Air Cleaner - Repair or Service

Serving Foothill Ranch, CA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"This was the perfect contractor experience. Brian was on time, personable, and obviously experienced since he installed my Wifi thermostat when three other places I called either blew me off or would not do a wifi installation. Also, a very nice handyman who did other work for me tried to install it but could not make it work. Sok I was worried he would encounter problems, but he did the installation quickly, noting that he did not need the jumper provided by Ecobee since the furnace installer had left a fifth wire he could use. (So, he obviously knew what he was doing). He provided me with the code from the thermostat so I could set it up on my phone app. AND...he did all of this remotely while I was in a another state! Finally, what he wanted to charge was only the standard fee I would expect for an HVAC home visit. I could hardly believe it. You better believe his number is saved in my home for any future HVAC needs. Fantastic!"
Cleaned and serviced ac unit.
Cleaned Air return
Cleaned air return
Inspected Furnace
Cleaned out condensation pan.

+4

Response time6 hrs
Recommended by65%of homeowners
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Showing 1-10 of 660
Heating and Air Conditioning FAQs, answered by experts

Evaporator coils in an HVAC system typically last between 10 and 15 years, which is roughly the same lifespan as the entire AC unit. The longevity of the coils can be affected by usage frequency, environmental conditions, and how well they are maintained. Regular maintenance, such as cleaning and inspections, can extend their durability. If the evaporator coil fails in an older air conditioner, it may be more cost-effective to replace the whole unit rather than just the coil.

Replacing an HVAC system does not always include new ductwork. The decision depends on the condition of your existing ducts. If they are in good shape, correctly sized for the new unit, and meet current standards, they can often be reused. However, if the ducts are damaged, poorly designed, or improperly sized, they will likely need to be replaced or upgraded to ensure the new system operates efficiently. An HVAC contractor will assess your ductwork and recommend the best course of action. Typically, ductwork is purchased separately, and a full replacement will add to the overall project cost.

You can buy a house with a 15-year-old HVAC system if you inspect the system for performance and budget for a replacement within the next three years. You can also negotiate the price with the sellers. Ask to look at the unit’s maintenance records and energy bills for the last two years to determine the shape of the HVAC system and its operating costs. Spend time in each room of the house to gauge if the HVAC keeps the home at a consistent temperature throughout.

Some of the signs of HVAC issues include rising energy bills, rooms not cooling or heating properly, loud noises when in operation, and signs of condensation. To illustrate, if you’re wondering how to stop condensation on air vents, you’ll need to have your HVAC inspected. 

Excessive humidity in a room often manifests through visible signs like condensation on windows or walls, a musty or damp odor lingering in the air, peeling wallpaper or paint, and the presence of mold or mildew. Experiencing discomfort due to a consistently clammy or sticky feeling can also indicate high humidity levels.

The Foothill Ranch, CA homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.