We are thrilled to announce a significant milestone in our journey. Complete Comfort Plumbing, Heating & Air Evolves into John Stevenson Plumbing, Heating & Air Conditioning, Inc. We are excited about the future as we continue to strive for excellence in all our endeavors. Thank you for your trust and continued support! 

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Heating & Air Conditioning Mission Viejo CA

Mission Viejo Heating & Air Conditioning Services

24/7 Residential & Commercial HVAC Services in Mission Viejo & the Surrounding Areas

Looking for a local, highly rated heating and air conditioning company in Mission Viejo? For all of your HVAC needs, count on John Stevenson Plumbing, Heating & Air Conditioning, Inc. to have your back! Our NATE-certified heating and air conditioning experts are equipped to take on all types of residential and commercial projects, from routine maintenance to emergency AC repairs. Need a new air conditioner or heating system? We can help with that, too. We offer a wide range of energy-efficient HVAC options in Mission Viejo from trusted brands, so you can start enjoying more reliable comfort and lower energy bills. 

Call today to request any of the following HVAC Services in Mission Viejo:

  • Heating Repair
  • Heating Installation
  • Air Conditioning Repair
  • Air Conditioning Installation
  • Duct Cleaning
  • Indoor Air Quality
  • Sheet Metal Fabrication
  • WiFi Thermostats
  • Home Automation
  • Commercial HVAC Services
  • Preventative Maintenance
  • Plumbing Services

Contact us online or give us a call today at (949) 426-7377 to schedule an appointment for our HVAC services and find out why we've been Mission Viejo's preferred HVAC company since 1999.


24/7 Mission Viejo Heating & Air Conditioning

Mission Viejo's weather can be unpredictable, and there's nothing worse than having your heating or air conditioning system fail when you need it most. That's where John Stevenson Plumbing, Heating & Air Conditioning, Inc., a trusted provider of 24/7 heating and AC services in Mission Viejo, comes to the rescue. Our services are a lifeline for residents and businesses, offering prompt and reliable assistance to keep your indoor environment comfortable and safe.

Why Choose John Stevenson Plumbing, Heating & Air Conditioning, Inc. for Your 24/7 Heating and AC Needs:

  • Expertise and Experience: Our skilled technicians at John Stevenson Plumbing, Heating & Air Conditioning, Inc. are highly trained and experienced in diagnosing and resolving a wide range of heating and air conditioning issues. Whether it's a furnace malfunction, a cooling system breakdown, or a thermostat issue, they have the knowledge and skills to handle it all.
  • Prompt Solutions: When you contact John Stevenson Plumbing, Heating & Air Conditioning, Inc. for emergency services, we recognize the urgency of the situation. Our goal is to provide fast and effective solutions to get your heating or cooling system back in operation as quickly as possible. This helps you stay comfortable and avoid potential damage to your home or business.
  • Safety and Peace of Mind: At John Stevenson Plumbing, Heating & Air Conditioning, Inc., your safety and comfort are our top priorities. We adhere to industry best practices to ensure your heating and cooling systems are repaired efficiently and safely.

Don't let a malfunctioning heating or AC system leave you uncomfortable. When emergencies strike, turn to John Stevenson Plumbing, Heating & Air Conditioning, Inc. for dependable and swift 24/7 heating and AC services in Mission Viejo.

HVAC Repair Services in Mission Viejo

Providing top-tier HVAC repair services in Mission Viejo, John Stevenson Plumbing, Heating & Air Conditioning, Inc. stands as a beacon of reliability and expertise in the industry. With a seasoned team of professionals committed to ensuring optimal comfort for your home or business, we prioritize efficiency and precision in every repair job we undertake.

At John Stevenson Plumbing, Heating & Air Conditioning, Inc., we understand the inconvenience and discomfort that arises when your HVAC system falters. Whether it's a scorching summer day or a chilly winter night, a malfunctioning HVAC system can disrupt the comfort of your space. That's where our dedicated team steps in, equipped with the skills and knowledge to swiftly diagnose issues and implement effective solutions.

John Stevenson Plumbing, Heating & Air Conditioning, Inc. doesn't just fix immediate issues; we aim to enhance the overall efficiency and longevity of your HVAC system. By using high-quality parts and adhering to industry best practices, our repairs ensure lasting results that exceed expectations. Our commitment to quality craftsmanship sets us apart.


For fast and effective HVAC repair services in Mission Viejo, contact us online or call (949) 426-7377 today!


Skilled Technicians for Swift HVAC Repairs

At John Stevenson Plumbing, Heating & Air Conditioning, Inc., our technicians are more than just repair experts; they're problem solvers. With extensive training, certifications, and years of hands-on experience, they're equipped to diagnose and resolve a wide range of HVAC issues. From thermostat malfunctions to complex compressor failures, our team handles each task with precision.

We believe in keeping our customers informed every step of the way. Before any repair work begins, our technicians conduct a thorough assessment of your HVAC system. We provide a detailed overview of the problem, explaining the proposed solutions and their implications. Transparency and integrity are at the core of our service ethos.

Mission Viejo Air Conditioning Services

John Stevenson Plumbing, Heating & Air Conditioning, Inc. is a trusted name for the families and businesses here to count on when they require air conditioning service in Mission Viejo. Our service team offers reliable repair and maintenance services to solve a wide variety of common (and not so common) air conditioning problems, including:

  • Poor airflow
  • Increased indoor humidity
  • System leaks
  • Weird noises
  • Thermostat malfunctions
  • Decreased energy efficiency

If your air conditioner is giving you trouble, don't wait until it has completely broken down to give us a call. Our Mission Viejo air conditioning experts respond promptly to service calls to provide our customers with timely, affordable solutions. 


Give us a call at (949) 426-7377 or reach out online to schedule a free estimate on any of our Mission Viejo air conditioning services today!


Heating Services in Mission Viejo

Furnace Repair Services for Mission Viejo Homes & Businesses

It doesn't get terribly cold here in Orange County, but the winter months can still be chilly enough that a working heating system is necessary. From heating repairs and yearly tune-up services to complete heating system replacements, John Stevensonis your go-to heating company in Mission Viejo. Emergency service is available!

Call our Mission Viejo furnace repair team if you have noticed any of the following common issues:

  • Your furnace smells odd. A smell of burning dust is normal if it's the first time you're turning on your furnace for the season. But if your furnace smells like burning plastic, diesel fuel, or natural gas, immediately turn it of and call for service.
  • Your furnace is short cycling. If your furnace only runs in short bursts of about a minute or less, that isn't enough time to heat your home. Short cycling has numerous causes that should be assessed ASAP to prevent excessive wear and tear on your system and higher energy bills.
  • Your furnace won't turn on. Is the pilot light out? Has a circuit breaker tripped? Has your thermostat reset itself? If you still need help, give us a ring!
  • Your furnace runs, but you're only getting cool air. If you're getting cold air from your return vents when your furnace is running, you may have a problem with a dirty air filter, leaking air ducts, an incorrect thermostat setting, a clogged condensate drain line, or your furnace's fuel source. 

New Furnace Installation & System Replacement

If the time has come for you to replace your old furnace, John Stevensoncan help you choose the right system based on your needs. With a wide variety of options on the market, you can reap the benefits of an energy-efficient system that will provide you with more reliable comfort and lower costs of operation. If you have questions about Annual Fuel Utilization Efficiency (AFUE) ratings for furnaces and what rating you should aim for when selecting a furnace, we can guide you.

A note about carbon monoxide: Be aware that older gas furnaces run a higher risk of carbon monoxide (CO) leaks due to age-related corrosion of the heat exchanger. This colorless, odorless gas is a biproduct of combustion that is safely vented outside of your home when your furnace is working properly, but if your heat exchanger becomes cracked due to age or poor maintenance, the gas could end up leaking into your indoor air. CO poisoning can be fatal, so don't delay professional furnace repair, maintenance, or replacement. 


Contact us online or give us a call at (949) 426-7377 to schedule an appointment for any of our Mission Viejo heating services today!


What Makes Us a Community Name?

Benefits of Working with Our Expert Team
  • Drug Tested & Background Checked Technicians
  • Upfront Pricing — You’ll Never Pay More Than You’re Quoted
  • Expert Advice From Professional, Licensed and Certified Technicians
  • We Stock Enough Parts in Our Trucks to Do 93% Of Repairs on the Spot
  • Flexible Scheduling - Ask About Same-Day or Emergency Service
  • 5 Star Service Guarantee Includes Service Tailored to Your Needs & Budget
Always Close By

You can rely on us for fast, effective services. As part of our 5 Star Service Guarantee, we promise to value your time, provide knowledgeable technicians, and dedicate ourselves to your full happiness with all of our services.

Call (760) 276-6690 Now!
Areas We Serve
  • Encinitas
  • Rancho Santa Fe
  • Escondido
  • San Marcos
  • Cardiff by the Sea
  • Ramona
  • Valley Center
  • Bonsall
  • Fallbrook
  • Leucadia
  • Oceanside
  • Carlsbad

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Hear From Our Customers

Expertise isn’t the only thing we have gained over the past three decades - check our our loyal customer base!
  • “I can't say enough great things about Patrick and the whole John Stevenson company.”

    - Holly G.
  • “Great job, the technicians explained everything so that I could make the best decision for my home.”

    - Victoria J.
  • “I have been using John Stevenson’s services for about 7 years now and am really happy with all the services provided so far: new heater installation and yearly checkup/tune-up; new tankless water heater installation and yearly flush.”

    - Flavia P.
  • “The thing about John Stevenson Plumbing is that it is simply the best company of its type in the region. The technicians are smart, personable, always courteous and helpful, knowledgeable and fun to get to know. They do their jobs on time and on budget and”

    - John H.
  • “Luis was great! Fixed a leak in a gas line to our Guest House. Work was done quickly and professionally with excellent communication to me about the process.”

    - Pam L.
  • “I have used John Stevenson numerous times over the past few years for both plumbing and heating issues.”

    - Phyllis S.