Della-Mora Heating and Air Conditioning

In Della-Mora Heating and Air Conditioning's own words

Della-Mora Heating & Air Conditioning is a veteran-owned, third-generation HVAC company proudly serving Chula Vista and the South Bay for over 30 years. We specialize in AC repair, furnace repair, HVAC installation, maintenance, and air duct services for homes and businesses. Our approach is simple: diagnose the real problem, explain your options clearly, and provide honest pricing before any work begins. We fix what needs fixing and only recommend replacement when it makes sense. As a family business built on integrity, we stand behind every job. Our licensed technicians are available for 24/7 emergency service when your comfort can't wait. Contact us today to schedule service.

Trade

HVAC contractor

Business address

180 Mace St Suite C-17, Chula Vista, CA 91911

Telephone

(619) 739-6161

Website

della-morahvacca.com

Hours

• Monday8:00 am - 5:00 pm
• Tuesday8:00 am - 5:00 pm
• Wednesday8:00 am - 5:00 pm
• Thursday8:00 am - 5:00 pm
• Friday8:00 am - 5:00 pm
• Saturday9:00 am - 12:00 pm
• SundayClosed

From the business's Google listing, checked Oct 2026

Register

CA register

Recorded as supplied and as found in public sources. This register makes no credential or quality claim about any business; check license status with the state board.

Google Reviews

4.9 ★★★★★ (66)

• Della-Mora just finished repairing my 26 year old air conditioner and I couldn’t be happier! They went above and beyond trying to locate parts for my out of date system. They even installed a temporary motor so we could get some relief during this heat wave while they continued to look for the correct part. They really cared about us and our problem even though they were very busy.

  Maria F.★★★★★

• Della-Mora Heating and Air Conditioning is by far the best company out there. Their prices and fair and honest. I would no doubt hire Mike and his team for additional AC work life req

  Tim F.★★★★★

• They provide truly professional diagnoses and explain each point clearly and simply.

  이해규★★★★★

• Absolutely, 5 out of 5, would even go above and beyond and say 10 out of 5 stars. We needed urgent assistance and that was received, the work was done incredibly well & the price was beyond fair. I highly recommend this business and would use them again in the future. It’s rare to find such great service nowadays. Grateful to have found someone good!

  D★★★★★

• I don't write many reviews, but Michael and the entire Della-Mora team absolutely deserve this one. Throughout our extensive home renovation, I've dealt with dozens of contractors across many specialties. Michael stood out immediately for his honesty, integrity, knowledge, and genuine commitment to customer service. He drove from Chula Vista to Carlsbad to inspect our HVAC system and took the time to carefully access and inspect the difficult-to-reach evaporator coil and blower motor. After doing so, he honestly told me that **neither needed to be cleaned**. He could have easily performed the work we had scheduled and charged me, but instead he recommended that it was unnecessary. I even offered to pay him for his time and long drive, and he refused. He was also incredibly knowledgeable about our older HVAC system and caught an issue with advice we had received from another company that could potentially have damaged our exterior unit. He clearly knows his craft and, more importantly, puts the customer's interests first. Michael told me he wants to bring genuine customer service back to the industry, and he absolutely demonstrated that. His integrity isn't just something he says—he proved it by choosing not to sell me unnecessary work. I've already referred him to my family and will absolutely use Della-Mora for future HVAC needs. If you want an honest, knowledgeable, and genuinely customer-focused HVAC company, I highly recommend Michael and Della-Mora.

  T V.★★★★★

• We had our AC stop blowing cold air on a Saturday. They came out on early Sunday AM and had the system up and running. It was a capacitator that they replaced for a fair price. Highly reccomend.

  Brad B.★★★★★

• Della-Mora saved my summer! Our AC was not blowing cold and seemed to be running all day without ever feeling cool. Della-Mora came out right away and within 10 minutes was able to see the issue. By the next morning we had a quote for the repair and they scheduled the repair. Each day without AC made it difficult to sleep and even cook, so I appreciated the prompt response. Now my home is comfortable thanks to Della-Mora!

  campbellz3★★★★★

• Michael quickly found the problem with my A/C, replaced the faulty thermostat, and had everything working again in under 10 minutes. Friendly, honest, and professional. Highly recommend!

  mario M.★★★★★

• Michael was in our neighborhood working on our neighbors AC. As i dove by i approached him after he finished with the neighbor's house if he could drop by and give us a free estimate to service our AC since it was an older unit that was on the fritz no longer pumping cold air. He said sure! He came by inspected the unit i turned it on he quickly found and resolved the issue it was a breaker issue, he later said that the R-22 was sufficient enough and educated us on how older AC functioned Michael was highly knowledgeable, friendly, polite and professional. Lucky me all free of charge since he was in the neighborhood servicing the neighbor's house. Thank you, Michael in a world of takers you are certainly a giver. I Highly recommend this guy!

  Michael D.★★★★★

• If you are reading this I must say... you are very lucky that you have an opportunity to work with Della-Mora HVAC company. They are a very honest, reliable and reasonable company that is rare to find these days. I highly suggest you give them a call!

  Chavi★★★★★

• Michael is a man of true integrity. He proposed an alternative, way more cost effective solution to fit my needs rather than what was best for him and his business. Highly recommend if you want an honest HVAC who isn't looking to scam you.

  Alex B.★★★★★

• 5++++ stars! Excellent service and communication. Came quickly & were honest about the fix, as well as provided tips and tricks to keep our HVAC works well. Will absolutely be calling them in the future!

  Masha R.★★★★★

• We had Mike come and diagnose a forced-air heater problem in the middle of this winter. He was prompt, expeditious, professional, and very fair with his estimate and repair. Over the years, since 2012, I have used Della-Mora HVAC for installations at my home as well as at my parents' house. I will never look elsewhere for future repairs or any new HVAC units.

  Craig R.★★★★★

• Our heater wouldn't turn off on Christmas day. My husband found Della-Mora's impressive customers' feedbacks so we contacted them. We were so surprised that Mike listened to our problems and didn't sound hurried at all. He gave us some instructions on the phone and promised to check the heater asap after Christmas. Two technicians came before him, but they were not able to definitely diagnose the problem. But Mike was able to troubleshoot it right away! He could fix it, but the furnace was so old that we decided to replace it. The installation of the new furnace was superb. There were some issues a few days after the installation, but Mike attended to it and made sure that it's good and running. He's very good at what he does and he appears to have a mastery of the trade. We're very thankful we chose him. We wish that his business will prosper because it's hard to find reliable and trustworthy people like them nowadays.

  CD F.★★★★★

• Amazing service and the guy was extremely helpful and cool! Came in on his day off and was able to immediately solve the problem based only on a few photos and videos we sent him of the issue. 12/10 service and will be using them for all of our Heating/AC needs going forward.

  Will E.★★★★★

• Mike had been installing gas and electric heaters for me for years. The price, the sceduling and the professional service is outstanding.

  Nancy C.★★★★★

• We had a great experience. Professional. Quick service. Competent. Couldn’t have asked for better. Thank you Michael!!

  J★★★★★

• Micheal and his team are very professional, honest and reliable. I highly recommend his company because you will be impressed by the experience from start and finish. Their customer service was friendly, professional, and responsive. One of the most important factors that makes this company stand out is the honestly.

  rachel★★★★★

• Very impressed with the quality of service we received from Della-Mora HVAC. The owner (Mike Della-Mora) was very knowledgeable, professional, and friendly. He arrived on time, and had our A/C unit fixed quickly. Very reasonable pricing (much less than I was expecting). He also provided valuable recommendations to help prolong the life of our old unit. We will be using Della-Mora for any of our heating & air conditioning repairs in Chula Vista going forward. Thanks Mike 👍

  Todd P.★★★★★

• They were on time and friendly

  Floyd B.★★★★★

• Very good experience with Mike D and Della-Mora AC for a number of years. Mike is very knowledgeable and brings a wealth of experience to every assignment.

  David S.★★★★★

• We’ve been using Mike and the team at Della-Mora for years now. Mike has installed 2 HVACs at two different homes and has done repairs for us when needed. Always professional and always top-quality work. Mike is a straight shooter and won’t steer you towards replacing a unit unless it’s necessary. We’ve also recommended to our friends and they are quite happy with the service from Della-Mora as well. The bonus is this is a Veteran Owned Small Business.

  Scott S.★★★★★

• Mike is amazing—total straight shooter and patiently explains all options for repairs and service.

  Holly B.★★★★★

• Great work by Della-Mora Heating and A/C! We were able to get a great qoute (cheaper than most other companies) with a military discount added thanks to Sylvia. We requested for relocation and update of our furnace to the attic to open up space in the laundry room. Additionally, we replaced our AC unit. We were qouted less than $10k for 5 days of work. All parts/equipment came with 5--10 year warranty. Michael was a true professional of the trade. He did relocation and updates of the associated vents, tested each vent, and updated the surrounding ducting and insulation in the attic. I would definitely use them again in the future.

  Amanda A.★★★★★

• Best of the best. Consummate professionals who get the job done right. Integrity born from previous incredibly courageous military service in combat!

  Robert C.★★★★★

• Della-Mora is simply the best in air-conditioning and heating. They did a tremendous job on our large church building and they also did a tremendous job in my house heater. I would recommend them over any HVAC company in San Diego. Brian A

  Brian A.★★★★★

• DellaMora is the best! Replaced my aging AC unit at a great price, and always respond quickly to any requests.

  Kenneth E.★★★★★

• Great price and great working heater and exchange unit. Mike and his team were extremely helpful and efficient. Recommend!

  Jacob S.★★★★★

• I have been using Mike for over 10 years and he always comes through. Great prices and quality workmanship.

  Corbin R.★★★★★

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About Chula Vista

Sources: U.S. Census Bureau. NOAA U.S. Climate Normals 1991-2020.