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Furnace Services in North County, CA

Servicing Gas, Oil & Electric Furnaces in Carlsbad, Vista, San Marcos & the Surrounding Areas

Is your furnace performing as it should be? While furnaces remain the most popular heating system in the country, they’re still prone to wear and tear and damage. While it may not be as cold in North County as in other parts of the country, you need your heating system when nights turn cold.

When the time comes to repair, replace, install, or tune your furnace, you can put your trust in the expert HVAC technicians at Sherlock Plumbing, Heating & Air. We provide quick, effective home services to residents of Vista, Carlsbad, and surrounding areas. Our licensed and certified technicians will be glad to help regardless of whether you have a gas, oil, or electric furnace.

We have extensive experience in the home comfort field, and we are prepared to provide you with any assistance you may require.

Reach out to a Team Member Today!

When your furnace has a problem, you’ll likely start wondering whether you need repair or replacement — and which to choose if you have an option. While furnace repairs are sufficient in many cases, a replacement may be a better alternative when looking at an older furnace with worse efficiency, harder-to-source parts, and an increased likelihood of additional breakdowns in the near future.

To determine whether repairs make more sense than replacement, consider:

  • Is your furnace more than 15 years old?
  • Does your furnace take a long time to hit the thermostat temperature?
  • Do you have inconsistent temperatures throughout your home?
  • Are your heating bills continually rising?
  • Does your furnace emanate loud and unusual sounds?

If it’s time to start thinking about furnace replacement, you can trust the experts at Sherlock to help find a suitable system to match your home, remove your existing system, and install the new one perfectly to specifications.

Quality installation prevents many HVAC problems before they begin, so it is crucial to get the job done right. We also offer financing options to help you manage the expense.

When your furnace starts misbehaving, it’s important to take action quickly. Any furnace can become hazardous under worst-case situations, and a delay in repairs will end up making them cost more as the damage becomes worse and stresses other components of your system.

Call the team at Sherlock for emergency service when you notice your furnace:

  • Emits lukewarm or cool air
  • Makes a banging or thumping sound
  • Turns on and off frequently

We’ll identify the source of your woes and implement a comprehensive solution in no time, so you can get back to being warm and toasty on cool days and nights.

Need a new furnace? Whether you’re replacing an old system or tired of relying on space heaters and blankets, you can put your trust in the certified technicians at Sherlock to provide exceptional furnace replacement and installation options matched to your home and heating needs. We’ll work with you to determine the right system for your home and budget.

Did you know that annual maintenance plays an important role in keeping your furnace running correctly? By having professional tune-ups done before the winter you’ll benefit from:

  • Improved efficiency
  • Better performance
  • Extended service life
  • Increased reliability
  • Less severe repairs
  • Cleaner indoor air quality
  • Improved safety

If you’d like to keep up with your HVAC maintenance, our VIP Comfort Club makes it easy with discounts, member-exclusive benefits, and more.

Whatever furnace services you need for your home in North County, you can count on Sherlock Plumbing, Heating & Air to deliver an affordable, experienced, customer-friendly result. We make customer satisfaction our top priority and work to ensure a painless experience from start to finish — that’s our Happiness Guarantee

To request furnace services, contact Sherlock Plumbing, Heating & Air today! We’ll send a technician to you as soon as possible to deliver affordable, effective repairs, installations, or maintenance!


From heating repair to regular maintenance, call the experts at Sherlock for trusted HVAC services around North County.

Schedule Service from Sherlock Today!

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0% Financing No Payments for 18 months On approved credit. Restrictions apply. All interest is waived if the loan is paid in full during the intro period. If the loan is not paid in full by the end of the intro period, the accrued interest is added to the loan amount and it converts to a 10-year standard installment loan and monthly payments begin.
Free Second Opinion HVAC Service, Repair, or Replacement Call today for more details! Can not be combined with any other offers or promotions.
$250 Off Air Purifier Destroy up to 99% of surface & airborne contaminants in your home. Call today for more details! Can not be combined with any other offers or promotions.
$25 Off Any Plumbing Service Repair Call today for more details! Can not be combined with any other offers or promotions.
$99 Off HVAC Service Fee Take $99 Off HVAC Service Fee When Repair Takes Place At Time Of Diagnostic. Can not be combined with any other offers or promotions.
$69 AC and Furnace System Checkup Keep your AC and furnace running at peak efficiency • Prevent costly breakdowns • Extend the life of your AC and furnace • Inspect your equipment to make sure it’s not leaking dangerous carbon monoxide. Can not be combined with any other offers or promotions.

We Can Help Simplify Your Home's Maintenance!

When you join the VIP Comfort Club at Sherlock Plumbing, Heating & Air, our Carlsbad home service experts will take care of maintaining your home’s most important systems so you can relax and enjoy not having to stress about problems with your heating, cooling, or plumbing!

Top Rated Customer Reviews

See What Your Neighbors Are Saying

Top Rated Customer Reviews

See What Your Neighbors Are Saying

Outstanding experience from start to finish. Neil was on time, professional, and very personable when he came the same day to assess my needs and provide an on-the-spot estimate. He didn't try and pre...

Jeff L.

Extremely pleased with the quick and professional service we received today! Our 14-year-old AC unit went out last night, i called this morning and a technician came out this afternoon. The fix was re...

Christine F.

Sherlock continues to be there for my family when we need them the most. I had a new HVAC system installed May of 2019, since then the service techs have come in for their seasonal inspections and I c...

Nick B.

Anthony, came to inspect the plumbing in my house as well as to drain and refill the water heater. I found him to be very informative and helpful, as well as professional and friendly. I was really ve...

Pam C.

Our water heater started leaking and a call to Sherlock was met with a same day response. Neil came out to explain our options of tank/tankless, gas/electric. He walked us through the pros and cons of...

Lorraine G.

This has been the best experience with a company we have ever had in our 50 plus years of marriage. From Vincent to Eric and his whole crew this was a very difficult project for everyone. They handled...

Roy S.

Hands down, these guys are the best. I had bids from three other highly rated HVAC companies in North County and none of them came close to the technical knowledge and professionalism of Sherlock. My ...

Kent C.

Sherlock is the coolest! As always, Yelpers are right on. Basing my picks on high stars and number of reviews, I called four companies. Right off the bat, I knew one company wasn't even an option due ...


This is a review not so much for Sherlock, but for Fred Radtke - the young man that came and got my heater working. He not only installed a new thermostat on the spot that is easier to read - and repl...

Barbara W.

Eric came out to fix my non-working air conditioner. He was professional, very nice, honest, knew his stuff. He had to over to Escondido to get the proper part, and returned on same afternoon, put the...

Seasides C.

Justin the sales agent, was great, very patient and responsive. The gentlemen who came in to work on the installation were great, explained everything and very respectful and clean. I had the unfortun...

M A.

Jared was our inspector and he showed up on time with a 30 min courtesy call. He was efficient and gave us an honest opinion of what was working and what needed to be repaired or replaced or serviced ...

Erica B.

Ahhh! Cool and comfortable in our house now. Thank you to the awesome guys who installed this high quality equipment. Good to have Costco stand behind them, too.

Susan F.

There is a reason this place has nothing but five stars. They earn it! I have had no AC in the house and was procrastinating on getting it fixed due to the cost and lack of need most of the year. I wa...

Wendy H.

JR, JoJo, and Eric came to my condo yesterday to install my HVAC system and Heat Pump. They were very meticulous and on task for the whole installation, and kept me informed as to what they were doing...

George M.

I had a great experience with Sherlock, from start to finish! Justin met with me and spent a few hours walking me through the current condition of my system and what Sherlock can offer. I had budget l...

Vinay R.

My experience with Sherlock Heating & Air has been amazing from the start when I first got my new heating & air conditioning system!!! They know how to deliver customer service!! They are hone...

Deborah L.

The tagline for Yelp's 5 star rating of "Woohoo! As good as it gets!" is 100% fitting for the work and professionalism of Jared and Enoch. They were courteous and upfront with the entire job. I found ...

Bryce H.

Just had an ACHP service done yesterday on the two units in my home. Their service rep was Jared Pratt. This guy was great! He took the time to do it right and to explain to me (every step of the way)...

Doug F.

I came to Sherlock by way of the Nest website--checked out the Yelp reviews and then made the call. Eric M., the technician who installed my 3rd gen Nest Learning Thermostat was courteous, knowledgeab...

Nancy S.

Buying HVAC for an entire house is not an investment to be undertaken without some research. It's probably going to cost more than $15K and will require a crew of techs working in your house for sever...

Brian G.

FINALLY an AC & heating business I can trust!!! Woo-Hoo!!!! If Sherlock Heating and Air Conditioning isn't a small family business, you would think they are! They are so kind, meticulous, honest, ...

Tanya S.

If my wife and I could give 6 stars we would! Carlos, Jojo and Joe installed our new HVAC system today, 31st October 2016. Started the day at 8AM and ending roughly around 615PM. I was impressed by th...

Nathan R.

Called Sherlock based on reviews here, as we've had less than stellar experiences with other local area HVAC companies. They scheduled an appointment within a couple days, the guy who came out could n...

Hi D.

Been using Sherlock for a couple years. Jared and Eric came out for the yearly check/tune-up. Both were super friendly, informative, timely, and put on shoe protectors whenever they came in the house!...

Sarah E