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TRUSTED BY LAKE FOREST, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon961
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Lake Forest, CA

*The Angi rating for Heating And Air Conditioning Service companies in Lake Forest, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Lake Forest, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on August 13, 2026

Find Heating and air conditioning pros in Lake Forest

Avatar for Total Home Environmental HVAC Co.
Total Home Environmental HVAC Co.
4.7(
105
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairHeat Pump - Repair or Service+6 more

Serving Lake Forest, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Good service and fast response hvac system works like a charm now"
Technician at Service Residence
Installing UV Sterilization Light
Installing UV Bulb to fight Covid
Removing tools from stocked truck
Stocked Repair Trucks

+17

Response time3 hrs
Response rate99%
138 neighbors recently requested a quote
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Avatar for Air Duct Professionals
Air Duct Professionals
4.7(
1,518
)
Air Ducts & Vents - Clean

Serving Lake Forest, 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
1 neighbors recently requested a quote
Recommended by92%of homeowners
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Avatar for HD MECHANICAL INC
HD MECHANICAL INC
5.0(
31
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+47 more

Serving Lake Forest, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"HD Mechanical did an amazing job. I felt safe hiring them to install my ac unit. They were very professional and they are very trustworthy. Would definitely recommend them to everyone."
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
Additional Photos

+14

Response time6 hrs
Response rate100%
75 neighbors recently requested a quote
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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 Lake Forest, CA and surrounding areas

Approved

In business since 2011

Customers say: Quick response

"This review not give me a choice of what did. They installed a minisplit ductless for a single room. By far the best price and seemed to know well what they were doing. Amazingly prompt service with no wasted time with pressure visits to convince me.Nathan knew exactly what he was doing and estimating. Answered promptly every time. Completely recommend."
Power supply
Response time4 hrs
3 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Ionel Firuta
Ionel Firuta
4.9(
116
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair - For Business+3 more

Serving Lake Forest, CA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Professional, Reasonable, Dependable. Excellent customer service. Ionel is a master in HVAC. Super nice guy who always puts customer first. Highly recommended!!"
Low profile condenser
High efficiency condensers
Very old furnace
New gas electric package unit
Response time4 hrs
4 neighbors recently requested a quote
Recommended by99%of homeowners
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Avatar for All City Plumbing, Air & Electrical
All City Plumbing, Air & Electrical
4.9(
271
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Lake Forest, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Emergency services offered

Warranties offered

The industry's best technicians make the happiest customers. Turn to the pros at All City Plumbing, Air, & Electrical for all of your plumbing, HVAC, and electrical needs. Proudly serving San Bernardino, Riverside, Los Angeles, and Orange Counties. We have over 5000s 5 star reviews across the web from our thrilled customers. Our company goal is to make sure that we have 100% customer satisfaction. We have options and payment plans that can fit in everyones budget. We provide free estimates and you only pay when you're happy. It's no surprise we've received the Angie's List Super Service Award six years in a row! Established in 2009. ACP was created to deliver exceptional service with the highest quality of craftsmanship. We guarantee you will be happy with our services in that we offer a money back guarantee. Our technicians are regarded by their peers to be some of the best in the industry. Our service experts are continuously trained. There isn't a plumbing or hvac problem we can't solve. We have the experience, knowledge and focus to solve any problem you may have. Give us a call today and let us earn your confidence.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+42

9 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Penguin Heating and Air Inc
Penguin Heating and Air Inc
5.0(
15
)
Central A/C - InstallCentral A/C - Service or RepairElectric Furnace / Forced Air Heating System - Install+11 more

Serving Lake Forest, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

Penguin Heating and Air Inc is here to help! We offer a variety of HVAC services from service to installations. We are based out of the Placentia, CA area. Give our team a call today. We're looking forward to working with you!\n

Diamond Bar
Diamond Bar
Diamond Bar
Furnace Install
AC Condenser

+6

Response time2 hrs
Response rate100%
15 neighbors recently requested a quote
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Avatar for Service Champions, LLC
Service Champions, LLC
4.4(
50
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+9 more

Serving Lake Forest, CA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Kayvan was a wonderful service tech! He was on time and professionally checked out the water heater and the HVAC system. He was so polite and friendly. He explained the need for a new filter in the heating unit and showed me photos of the unit located in the attic. He also offered to do a friendly deed for free, which I greatly appreciated, He’s a great asset to Service Champions!"
Area Drain Cleaning
Plumbing
Plumbing
Garbage Disposal
Drain Cleaning

+13

Response time4 hrs
Recommended by79%of homeowners
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Avatar for Trinity Heating and AC
Trinity Heating and AC
5.0(
44
)
Central A/C - Service or RepairThermostat - Install or ReplaceGas Furnace / Forced Air Heating System - Repair+4 more

Serving Lake Forest, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Warranties offered

"Very quick service and flexible scheduling. I would highly recommend using them for yiur next HVAC project."
Furnace Before
AC After
Furnace After
AC Before
Before - Furnace

+83

Response time3 hrs
Response rate98%
38 neighbors recently requested a quote
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Avatar for Trabuco Air
Trabuco Air
4.6(
130
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair - For Business+1 more

Serving Lake Forest, CA and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"Sam, who came out to give me an estimate for a new system, found out that the old fan motor was the culprit and recommended that we just repair the motor. He explained things in detail, helped us to save money in a genuinely sincere attitude, I was impressed how good his service was, and I recommend him for any HVAC issues. I will be using him in the future."
Response time5 hrs
3 neighbors recently requested a quote
Recommended by94%of homeowners
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Showing 1-10 of 762
Heating and Air Conditioning questions, answered by experts

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.

Fixing a leak in an AC unit costs $200 to $1,600, depending on the type of leak and any related damage. But depending on the age and condition of your AC, it might make more sense to replace the AC unit instead of repairing it. If your AC is only a few years old and relatively problem-free, then repairing it is the right call. But if it’s nearing a decade old and has other issues, consider replacing it.

The outdoor portions of air conditioners are designed to weather the rain, so you don’t need to worry about it. An awning or roof will help protect them from snow or falling debris, which can do more damage. This is true of both window AC and outdoor units for larger systems.

When first installed, flex ducts shouldn’t cause airflow problems in your home. However, because flex ducts aren’t the sturdiest and require extra support, they lose their durability over time and begin to sag, which can inhibit airflow down the road. Also, if your flex ducts aren’t tight enough, your HVAC could work twice as hard for the same air pressure. If you’re worried about the airflow in your home, a rigid duct may be your best bet.

Yes, it’s normal for an AC to drip water. In fact, it’s part of the dehumidifying process that takes place inside your AC unit as the condensation trickles down into the drain pan. However, it isn’t normal for your AC to sound like it’s running water or have large puddles around it. If that happens, you can try the solutions listed above or call an AC repair pro.

The Lake Forest, 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.

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