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HVAC PRO

Top Pro

Contact for price
Scheduling

Responds in about 14 min

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If you hire this pro, you’re covered by a money-back guarantee. Learn more

If you hire this pro, you’re covered by a money-back guarantee. Learn more

About
I have been doing HVAC servicing for 21 years and it has become a passion for me. I know all the processes from the inside, my goal is to understand the cause of the breakdown and eliminate it using the most modern and safest methods for health. I won’t just fix a temporary breakdown, I will fix your equipment for many years of service. I have all the necessary tools, supplies expense, modern measuring equipment, my knowledge and experience. And I use all this for my happy clients. My highlight is that I love my job and do it conscientiously and efficiently.
Overview

Current Top Pro

Hired 515 times

Serves Beverly Hills, CA

Background checked

3 employees

21 years in business

Business hours

This pro hasn't listed their business hours.

Payment methods

This pro accepts payments via Apple Pay, Cash, Check, Credit card, PayPal, Venmo, and Zelle.

Top Pro status

Top Pros are among the highest-rated, most popular professionals on Thumbtack.

Top Pro Icon

2025

Top Pro Icon

2024

Services offered
A/C services needed
Property type

House

Townhouse

Business

Projects and media
Projects and media
Reviews

Customers rated this pro highly for work quality, professionalism, and responsiveness.

Great 4.8

314 reviews

5

95%

4

1%

3

0%

2

1%

1

3%

Read reviews that mention:

pro avatar
Danielle M.

7 days ago

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Hired on Thumbtack

Denis responded very quickly to our message and was at our home within hours! He diagnosed our issue, explained the cost and suggested repairs, and made those repairs same day. Our AC is up and running. Thank you, Denis!!

Details: Repair • Unit won't turn on or off • Closet • Outside • House • Renter, with owner's permission to do this job

Central Air Conditioning Repair or Maintenance
pro avatar
Sarah M.

Mar 21, 2026

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Hired on Thumbtack

Denis responded right away to our a/c issue. He areivd promptly and explained the situation to us and offered us different repair options. He was very professional and I would recommend him.

Details: 2 units • Need professional to recommend size • Home • Owner

Window, Wall, or Portable AC Repair or Maintenance
pro avatar
Ana C.

Mar 21, 2026

•

Hired on Thumbtack

Reached out for a quote and Denis came by the same day to check out our HVAC system. Our AC was blowing air not cooling as the air itself was not cold. Once he arrived he quickly got to work looking at the condenser unit and he identified the issue. He shared what the issue was and what the cost would be and shared he could complete the work same day, we agreed and he fixed it right then and there. When he came into the home to check the air handler/furnace unit he noticed the air smelled damp and he identified that there was mold in the evaporator coils. He shared this with us and a solution as well as pricing, we agreed and he fixed this unknown issue same day as well. The AC ran great after the fact and when we had an issue with not cooling air again a few days later he came by to check it out. This time it was a bit of a mystery as he got it run perfectly fine and did not identify any issues. Overall would recommend using Denis, he is professional, responsive, and knows his craft well!

Details: Furnace • Closet • Single-level building • House

Heating System Repair or Maintenance
pro avatar
Nishi P.

Mar 18, 2026

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Hired on Thumbtack

He came within two hours and saved me from the heat wave. He was professional, punctual, and communicative and fixed a broken AC.

Details: Repair • Only warm air is blowing from the vents • Outside • Ground floor • House

Central Air Conditioning Repair or Maintenance
pro avatar
Kim S.

Mar 23, 2026

•

Hired on Thumbtack

Dennis was great! He quickly identified the issue and got everything fixed the same day. The AC is now working better than ever. He explained everything clearly and made the process easy. Highly recommend.

Details: Repair • Only warm air is blowing from the vents • Outside • Outside • House • Owner

Central Air Conditioning Repair or Maintenance
Credentials
Background Check

Denis Zemliakov

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