Top Pro

$35/service call

(waived if hired)

Plenty of availability

in the next 3 days

A/C unit size

A service call at your home will allow the pro to identify the issue and get you an accurate quote. They can usually do the job same-day.

Responds in about 3 min

Introduction: 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.

Current Top Pro

Hired 16 times

Serves Lomita, CA

Background checked

3 employees

19 years in business

Business hours

This pro hasn't listed their business hours.

Scheduling policy

You can reserve this pro up to 28 days in advance. They'll need at least Read more

Payment methods

This pro accepts payments via Cash, Check, Credit card, and Zelle.

Featured Projects

19 photos


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

Great 4.7

15 reviews


Read reviews that mention:

pro avatar
Ivy K.
Feb 11, 2024

Hired on Thumbtack

Hired on Thumbtack

A vent was leaking in the house i was using a soup pot to collect the water. I am extremely happy with the service received from DZO. He was on time and extremely respectful to my home custom The repair was completed efficiently and quickly and it’s guaranteed I will definitely call again

Details: Repair • Outside • Roof • House

Central Air Conditioning Repair or Maintenance
pro avatar
Robert B.
7 days ago
Dennis quickly and accurately diagnosed the issue, efficiently completed the repair, and provided valuable maintenance tips. The service was prompt, professional, and reasonably priced. Now our AC is running perfectly again! I highly recommend DZO HVAC and Dennis to anyone in need of reliable and skilled AC repair services.
pro avatar
Nicholas B.
2 weeks ago

Hired on Thumbtack

Hired on Thumbtack

I am happy with the quality of Dennis's work ethic. He arrived on time, with a smile presenting his eagerness to meet me, listen, and diagnose my heating & air conditioning system needs. He kept me abreast with fixing the problems. I will use DZO HVAC Group INC services again and ask for Dennis. I offer a five-star assessment of the work performed. Thank you, Nicholas

Details: 3 or more • Need professional to recommend size • Home

Window, Wall, or Portable AC Repair or Maintenance
pro avatar
Juliet C.
4 days ago
Great experience with Dennis for AC maintenance. Very professional and thorough. The air conditioner runs like new. Highly recommend for reliable HVAC service.
pro avatar
Hillary N.
4 days ago
Excellent service from Denis fixing my furnace. Professional, punctual, and everything works perfectly. Highly recommend!
Background Check

Denis Zemliakov

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