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4.6

(357 reviews)

Top-rated heating and air conditioning pros.

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Avatar for Bob Jenson Air Conditioning And Heating Inc
Bob Jenson Air Conditioning And Heating Inc
4.9(
174
)

Serving Oceanside, CA and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"Great service all around from Bob Jensen. Free in home estimate with no pressure sales tactics. When it came to the installation, it was nice to know that they use their own crew, they do not subcontract out the work, so you know what you're going to get. On the day of installation, the sales person came also to ensure that we all understood what was going to happen. The install technicians, Tony and Sammy, took time to ensure that everything was done correctly and answered all the questions I had. I would highly recommend this company for any of your HVAC needs."
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+47

Response time1 day
80 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Airmerica Air Conditioning & Heating
Airmerica Air Conditioning & Heating
5.0(
34
)

Serving Oceanside, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"We hired Airmercia Air Conditioning & Heating to evaluate our heating system and propose repair solution. Ryan was very professional and punctual. He did not make any force sales. He just offered various repair and replacement solutions and explained pros and cons for each one. We decided to replace our furnace and duct system. Ryan did an excellent Job!! I highly recommend him for your HVAC project."
Ultra Lo NOx 80% furnace and coil with Air-Wave air cleaner and 2" media filter
Outdoor unit feeding (5) indoor wall mounts
Heating & A/C Project
Single stage 14.3seer2 AC condenser
Outdoor unit feeding (5) indoor wall mounts with electrical ran by us from panel.

+6

Response time8 hrs
27 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Air Duct Professionals
Air Duct Professionals
4.7(
1,517
)

Serving Oceanside, 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."
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+11

Response time2 days
1 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for AireCare Heating and Air
AireCare Heating and Air
5.0(
39
)

Serving Oceanside, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Michael, Enrique, Raul & Luis are absolutely first class. I recommend AireCare for all HVAC needs. We got a new furnace & AC unit, & we definitely got more than what we paid for. OUSTANDING!!"
San Marcos Full System
San Marcos Full System
San Marcos Full System
San Marcos Full System
San Marcos Full System

+8

Response time6 hrs
Response rate91%
22 neighbors recently requested a quote
Avatar for Cool Air Technologies Inc
Cool Air Technologies Inc
4.9(
493
)

Serving Oceanside, CA and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"We just had a new HVAC system installed in our home in Aliso Viejo. The contractor was Cool Air Technologies, Bill McIntosh, (714)863-0626. We were very impressed with the new unit put in the attic and back yard, the workmanship, the professionalism, the quick response time to get our appointment, the testing of the new units before they left, the lessons for us on how to use it, and the complete clean up and hauling every piece of the old unit away when they left. They even installed new air vents/registers in every room and air filters! Very impressive and highly recommended to everyone! [*** Link removed ***]"
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Response time2 days
7 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Liberty Plumbing Heating Air Conditioning Inc
Liberty Plumbing Heating Air Conditioning Inc
4.9(
208
)

Serving Oceanside, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"My 26 year old central air system went out on a Thursday night.  I called Liberty Friday morning and the sales manager for Liberty came to the home the same afternoon. After discussing details, options and answering all of my questions, I accepted their contract to replace my 5 ton ac and furnace. The price was fair and all of the work was completed the very next Tuesday.  Part of the installation involved enlarging the air return space under the furnace closet.  This improvement, along with the higher efficiency AC unit should keep me smiling this summer.  They also provided a programmable thermostat and set it up so the house will always be at my preferred temperature.  I won't even have to switch between cooling and heating when the seasons change.  I couldn't be more pleased with the outcome and will definitely call Liberty for any plumbing problems I might have in the future.
"
Response time8 hrs
Response rate98%
17 neighbors recently requested a quote
Avatar for All Day Heating And Air Conditioning
All Day Heating And Air Conditioning
5.0(
16
)

Serving Oceanside, CA and surrounding areas

Approved

In business since 2010

Credit card accepted

Customers say: True professional

"My A/C Unit stopped working, I called All Day Heating & Air Conditioning, they came by later that day and replaced my start capacitator, they had a couple on the truck that they wired together to simulate the bad one and they were all done in less than 1 hour all is good A/C works fine now.
"
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+14

Response time4 hrs
Recommended by100%of homeowners
Avatar for Personal Plumbing, Heating & Cooling
Personal Plumbing, Heating & Cooling
4.5(
359
)

Serving Oceanside, CA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Friendly customer service and professionalism. Two guys serviced the unit and check each room in the house, as well as the inside returns and filters. They made recommendations regarding vent settings and leaving room doors open to improve return airflow."
Mini Split System Install Oceanside
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+12

Response time1 day
Response rate96%
23 neighbors recently requested a quote
Avatar for Airtime Plumbing Heating & Air
Airtime Plumbing Heating & Air
4.8(
28
)

Serving Oceanside, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"Technician Angel came on time. He first cleaned our HVAC unit, checked the wirings & parts & performed tests to ensure the unit is running according to standards. He inspected the Air ducts, vents even the attic. He explained everything and showed us the pictures that he took & the results on HVAC heating and cooling tests that were done. Overall a very good job done by Technician Angel I told him to come back after 6 months. Already recommended Airtime Heating & Cooling to my neighbor. 5 STARS"
tankless water heater
Chacon house
Chacon house
Chacon house
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+55

Response time9 hrs
Response rate100%
93 neighbors recently requested a quote
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Showing 1-10 of 461
Heating and Air Conditioning questions, answered by experts

At a minimum, an HVAC system should be serviced once per year. However, a twice-a-year service schedule—once in the spring for the cooling system and once in the fall for the heating system—is often recommended, especially for older systems, heat pumps, or in climates with extreme temperatures. Regular service, which includes inspection, cleaning, and maintenance, ensures the system runs efficiently, helps prevent costly breakdowns during peak seasons, and can extend the unit's lifespan. You can also schedule a service if you notice issues like poor performance or strange noises.

Window ACs use 500 to 1,400 watts per hour of electricity, while mini-splits use 500 to 700 watts per hour. However, if you need to cool multiple zones in your house, your mini-split can use as much as 2,000 watts per hour. How often you run your system will impact how much electricity you use (and how much you pay per month).

Yes, mini-split systems are generally less expensive to run than central air conditioners and are significantly more energy-efficient. Because mini-splits do not rely on ductwork, they avoid the energy loss associated with ducted systems, allowing cooled or heated air to reach its destination more efficiently. Additionally, they offer zoned control, meaning you can run units in individual rooms and turn them off in unoccupied areas. This capability can lead to energy savings of about 30% compared to a central air system, resulting in a lower monthly energy bill.

You should use a breathable, weather-resistant cover with ventilation. It can be a top cover or a full cover that has mesh to allow airflow. A full, non-breathable cover can cause moisture to build up, leading to rust, frozen parts, and corrosion. A full cover also attracts unwanted critters, such as mice, that can damage the wiring and your unit. If you need to protect your AC unit from falling icicles, choose a sturdy top cover or piece of wood that prevents icicles from damaging your unit.

Yes, it is possible. An electrical fire can break out if the compressor has inadequate ventilation. When it overheats but doesn't have a proper thermal cutout, this can cause the motor to short-circuit and catch fire. This risk is exacerbated if flammable materials, like dust and fallen leaves, are clogging the unit. The compressor overheating won't start a fire by itself, but poor maintenance and installation can increase the risk once it hits its breaking point and short-circuits.

The Oceanside, 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.