What’s the best thermostat setting for summer in San Diego?

For optimal comfort and energy savings during summer in San Diego, set your thermostat to 78°F (25°C) when you're home. If you're away, raising it to 85°F can help reduce cooling costs. Using a programmable or smart thermostat can make these adjustments automatic and more efficient.

Do you provide emergency after-hours HVAC service in San Diego?

We are available 24/7 to take your call for emergencies. Our appointment hours are listed above.

How can I improve indoor air quality in San Diego?

To improve indoor air quality in San Diego, start by regularly changing your HVAC filters, scheduling routine maintenance, and using air purifiers. Consider duct cleaning if your home has excessive dust or allergy symptoms. Proper ventilation and keeping your home clean are key to healthier air.

How often should I service my HVAC system in San Diego?

It’s ideal to service your cooling system each spring and your heating system each fall to ensure you find small issues before they become big problems.

Do you offer HVAC financing in San Diego?

We work with several lenders to provide financing options for qualifying customers. Ask your technician about your financing options.

How often should I have my furnace serviced in San Diego?

It’s recommended to have your furnace professionally serviced once a year, ideally in the fall before the heating season begins in San Diego. Annual maintenance helps ensure safe operation, improves efficiency, and can extend the life of your system.

How often should I have my air ducts cleaned in San Diego?

It’s generally recommended to have your air ducts cleaned every 3 to 5 years in San Diego, or more often if you notice dust buildup, allergies, or musty odors. Homes with pets, recent renovations, or high pollen levels in San Diego may benefit from more frequent cleanings to maintain healthy indoor air quality.

How often should I schedule AC maintenance in San Diego?

You should schedule AC maintenance once a year, ideally in the spring before the cooling season starts. Regular tune-ups help your system run efficiently, prevent breakdowns, and extend the life of your unit, especially important in San Diego's summer climate.

What size HVAC system is right for my home in San Diego?

The right HVAC system size for your home in San Diego depends on factors like square footage, insulation, number of windows, and local climate. A professional load calculation ensures your system is properly sized for comfort and efficiency. Oversized or undersized units can lead to higher energy bills and uneven temperatures.

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Bringing Comfort Home

San Diego HVAC Services

One Hour Heating & Air Conditioning® of San Diego

4.9

(1007 reviews)

Heating & Cooling

Services By One Hour

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HVAC Emergencies

Fast 24/7 emergency HVAC repairs to restore your comfort when you need it most today.
Air Conditioning

Reliable air conditioning services to keep your home cool and comfortable all year.
Thermostat Repair

Expert thermostat services for precise temperature control and maximum energy savings.
Ductwork

Expert ductwork services to optimize airflow and maximize HVAC system efficiency.
Indoor Air Quality

Comprehensive air quality solutions for healthier, cleaner indoor air in your home.
Heating

Professional heating services to keep your home warm and comfortable year-round.

HVAC Repair, Installation & Maintenance

Heating, AC & Furnace Repairs in San Diego, CA

When homeowners want a reliable heating or air conditioning system that they don’t have to think about, they call One Hour Heating & Air Conditioning® of San Diego. We are the premier HVAC service provider in the United States for a simple reason: we actually care about your comfort.

At One Hour, we respect you, we respect your time, and, most importantly, we respect the trust that you put in us to keep your home comfortable. It’s why we back all of our work with a 100% customer satisfaction guarantee for two years, and it’s why we’re always on time—guaranteed.

One Hour Heating & Air Conditioning technician Checkin HVAC.

Hours of Operation

We are available 24/7 to take your call for emergencies. For all other services, our appointment hours are:

Monday

24 hours

Tuesday

24 hours

Wednesday

24 hours

Thursday

24 hours

Friday

24 hours

Saturday

24 hours

Sunday

24 hours

Special Offers

Mention these discounts at time of service

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Lifetime Parts and Labor Warranty

Never worry about repairs or replacements again!

Terms and conditions apply.
$100 OFF Water Heater Repair or $250 OFF Water Heater Replacement!

For a limited time, receive $100 OFF a Water Heater Repair, or $250 OFF a Water Heater Replacement!

Applies to tank and tankless water heaters.

Service fee may apply. Valid at participating locations. Limit one coupon per household. Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Some restrictions, taxes and fees may apply.
$0 Service Call Fee!

No service call fee with repair! Call (619) 371-3928 for more information!

If no repair is made, service fee may apply. Limit one coupon per household at participating locations! Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Management reserves the right to modify offers at any given time. Some restrictions may apply.
36 Months 0% Interest Financing!

Start your project now and pay nothing for 24 months. Terms and conditions apply. Financing is subject to credit approval. Financing is provided by one or more third-party lenders, not by Authority Brands.
5% OFF HVAC REPAIR OR AC REPAIR FOR HERO MEMBERS

FIRST RESPONDERS, VETERANS, ACTIVE DUTY, TEACHERS - QUALIFY FOR A FREE HERO MEMBERSHIP. Please call (619) 371-3928 for more details.

Can not be combined with any other offers or discounts. Management reserves the right to modify offers at any given time. Some restrictions may apply.
Free WIFI Thermostat with NEW AC Units starting at $75 per month!

Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Management reserves the right to modify offers at any given time. Some restrictions may apply.

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HVAC Services Have Great Guarantees

Our customers love what we do because we treat them like the neighbors they are to us. While we carry the One Hour name, we’re an independently owned and operated business with a personal investment in the local community. We back our work with a 100% satisfaction guarantee, provide StraightForward® pricing guides for your benefit, and will pay you back for being even one minute late to an appointment.

We have a reputation for being punctual, friendly and knowledgable

4.9

(1007 reviews)

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Anthony arrived right on time and was incredibly respectful and clean, even wearing his own shoe covers inside. He clearly has a fantastic understanding of how these systems work; he gave me a great overview of the service my system needs and what an optimized setup would look like. He also shared some excellent maintenance tips to help improve the longevity of my current unit. Highly recommend!

Sam Fusco

3 weeks ago

Anthony was very punctual. In fact, he arrived early. I recently bought a mobile home. He checked my HVAC system for me. He let me know that everything was working great. He cleaned off my outside heatpump for free. He's very honest and didn't charge me a dime. I've been ripped off before by air conditioning companies, but I will definitely do business with One Hour Heating and Air in the future.

Brenda Bushway

a month ago

Carlos Esquivel at One Hour was extremely knowledgeable and professional throughout the entire process of helping us with our new AC system. He took the time to answer all of our questions, explain our options clearly, and made sure we understood everything before making a decision. Carlos went above and beyond to help us get the best pricing and deals available, making the whole experience stress-free and comfortable. We truly appreciated his honesty, expertise, and excellent customer service. We highly recommend Carlos to anyone looking for HVAC services!

Jennifer GarciaGarduno

a month ago

I had a great experience with this company, thanks to Joel! He came out to service my home's AC, and I couldn't be happier with the results. Their response time was incredibly fast, which I really appreciated. Joel was fantastic—super friendly, highly knowledgeable, and took the time to do the job right. Everything is running perfectly and blowing ice cold. If you need HVAC work done, definitely ask for Joel. Highly recommended!

James Kurtz

2 months ago

Here For You

When You Need Us Most!

Yellow One Hour Heating & Air Conditioning service van with company branding and slogan.

'Round the Clock Availability

No matter the hour, you can trust One Hour to be there to help you when you get hit with the unexpected.
100% Satisfaction Guarantee

We guarantee our materials, labor, and craftsmanship for up to two years from the date of your service.
StraightForward Pricing® Guide

Before we start any work, we discuss your available options so you know exactly what you are getting and how much it will cost. No hidden fees!
Always On Time…Or You Don’t Pay A Dime!®

We understand your time is valuable, so we promise to arrive at your home within the predetermined time window that you select, or your service call is free.

Financing Available!

Prioritize your comfort without fronting the entire bill on day 1 – contact us today to learn more about financing options.

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Meet the San Diego Team

Jonathan M.

Operations Manager

Hi, my name is Jonathan and I have a combined 25 years of electrical and HVAC experience. I have worked on many different types of systems including furnaces, heat pumps, mini-splits, and package AC units. My goal is to provide the highest level of service to every one of our clients. When I am not helping clients make their homes as comfortable as possible, I spend as much time as I can with my wife, children, and grandchildren. I look forward to seeing you soon.
Jeffrey C.

Service Manager

Hi, my name Is Jeffrey, I’ve been in the residential HVAC industry for 27 years. For the majority of my career, I’ve been a technician. Over time, I’ve learned the systems and have been designing systems for clients needs and wants. I treat clients and their home the way I want to be treated when contractors come to my home. I’m a father of two children, 20 year old son and 15 year old daughter. My most prized and joyful in my life are my kids. In my spare time, I like to go camping with my kids, and enjoy watersports. I can't wait to welcome you to the One Hour family!

HVAC Near Me In...

One Hour Heating & Air Conditioning® of San Diego services the following communities:

Carlsbad
Chula Vista
Clairemont
Del Mar
El Cajon
Encinitas
Escondido
Kearny Mesa
La Jolla
La Mesa
Lakeside
Mira Mesa
Oceanside
Pacific Beach
Poway
Ramona
Rancho Bernardo
Rancho San Diego
Rancho Santa Fe
San Diego
San Marcos
Santee
Solana Beach
Vista

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Expert Tips

Learn From Our HVAC Experts

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Authority Brands is the leading provider of in-home services, building brands that support the success of franchisees as well as better the lives of the homeowners we serve and the people we employ.