Your Local Indoor Comfort Experts

Your comfort is our goal! If you’re not happy, we’re not happy.

HVAC team standing in front of branded Lambert service van.

Experienced technicians. Quality workmanship.

Reliable Heating and Air Conditioning

When your heating or air conditioning system is not working properly, you need a contractor you can rely on. Lambert Heating and Air Conditioning provides dependable HVAC services designed to keep your home comfortable in every season.

From small repairs to full system replacements, our team focuses on long-term performance, energy efficiency, and clear communication. We take the time to explain your options so you can make confident decisions about your home’s comfort.

What We offer

Alan Solo Photo no background

Air Conditioning

  • Air conditioner repair

  • AC installation and system replacement

  • High-efficiency cooling upgrades

  • Preventive air conditioning maintenance

  • Heat Pump Services

Heating

  • Furnace repair and diagnostics

  • Furnace replacement and installation

  • Heat pump services

  • Heating maintenance and tune-ups

  • Mini Splits

Ductless Mini Splits

  • Installation and system replacements
  • Accurate diagnostics and expert repairs
  • Reliable solutions that restore comfort and system performance quickly
  • Improved comfort and energy efficiency through properly installed and repaired systems

See Why Your Downey Neighbors Call Us!

EXCELLENT
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Based on 330 reviews
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Mark Rule profile picture
Mark Rule
October 29, 2026
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What an incredible experience! Our AC went out during a record heat wave, and after contacting several AC companies, I was getting nowhere. Some never even returned my calls, and the ones who did were booked for months. Then I called Lambert. I left a message on Sunday, and Alan the owner called me back Monday morning! Manuel came out the very next day, diagnosed the problem, ordered the part, and had everything repaired in less than a week. He showed up on time, gave us a courtesy call before arriving, and provided an estimate upfront. Even better, the final cost was actually LESS than the estimate! Manuel was one of the nicest and most professional repairmen we’ve ever met. He was transparent and even took time to explain and show me what the problem was. I was dreading the diagnosis thinking we would have to splurge for a new AC system. Turns out it was the motor. The entire experience was refreshing, especially after the frustration of trying to find someone who could help us during a heat wave and not rip us off based on experiences I've heard from friends. I don’t usually go out of my way to write reviews, but this experience really impressed me. It’s not often you find a company that’s this responsive, honest, and professional. I’m so glad I found Lambert Heating & AC and I wouldn’t hesitate to call them again! We will definitely call them for our next maintenance check.
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Dawn Williams profile picture
Dawn Williams
October 22, 2026
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Alan came at short notice to help with my dad’s AC, fixed the problem, and completed the job in a timely manner. Thank you Alan!
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Lauren Shallcross profile picture
Lauren Shallcross
October 15, 2026
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When one of their technicians was sick, the owner came out to inspect my AC. An owner that can perform every job well, is a rarity. Communication was prompt and professional. The technicians were knowledgeable and polite. Even when they encountered a defective part, they made sure I was taken care of the same day.
Posted on Google Google
Bill profile picture
Bill
October 1, 2026
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This is my first time that I employed Lambert Heat/AC. Manuel (the technician) was through and explained the various services he was performing. I highly recommend this business and, on a yearly basis, will continue my relationship with them!!! 🙂😂
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TheEnderVids profile picture
TheEnderVids
September 19, 2026
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Great family owned Alan is very detail and has great workers and honest prices
Posted on Google Google
Gavin Delgardo Sr. profile picture
Gavin Delgardo Sr.
September 1, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Technician was friendly & knowledgeable.. most important honest about issues with the AC unit & options for repair .. highly recommend Lambert !! A1 service !!
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Michelle Garcia profile picture
Michelle Garcia
August 28, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I called Alan from Lambert heating and Air. He was able to come out the next morning and look at our system. I own a bakery so keeping it cool is a necessity. He was able to find that there was a Freon leak in the main unit. Also, the air filter on the roof was very dirty. He gave his recommendations, and was approved by our landlord to do the service, because he came in underbid and was able to do the service the same day. I am very happy with his service and attention to detail. If you are in need of any air conditioning services don't hesitate to give them a call.
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Pickleman Tisdale profile picture
Pickleman Tisdale
August 25, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
We just had a new HVAC system installed by Lambert Air & Heating and had such a great experience with them. Alan and everyone we dealt with was friendly, professional, knowledgeable, and incredibly helpful. They showed up when they said they would, communicated with us throughout the process, and left everything clean when they were finished. You can tell they genuinely care about their customers and take pride in doing quality work. We’re so happy we chose Lambert Air & Heating and would absolutely recommend them to anyone!
White Lambert HVAC service van with logo and contact details.
Alan and Manuel with a customer

Repairs and Installation

Residential HVAC Services

We provide comprehensive heating and cooling services to support your home’s comfort in every season. Whether you need fast repairs, preventive maintenance, or a new system installation, our team is equipped to deliver reliable results.

Our services include:

  • Heating system repair and replacement

  • Air conditioning repair and installation

  • HVAC maintenance and tune-ups

  • Energy-efficient system upgrades

Every service is performed with attention to detail, safety, and long-term performance.

Why Choose Lambert Heating and Air Conditioning?

HVAC team standing in front of branded Lambert service van.

Family-Owned & Operated

We are a family-owned and operated company that strives to restore comfort to our neighbors’ homes.

5-Star Service

The service and quality we provide has earned us a 5-Star Rating across review sites like Angi, Yelp, and CityLocal.

Background-Checked Technicians

Your safety is important to us, so we promise to only send technicians into your home who have been fully background-checked.

Satisfaction Guaranteed

When you schedule services with us, we guarantee satisfaction with every job. If you're unhappy with our work for any reason, just let us know! We'll make it right at no additional cost to you.

Professional Service From Start to Finish

Professional HVAC Services

We believe great HVAC service starts with clear communication and ends with lasting comfort. From your first call to the completion of service, our technicians take the time to evaluate your system, explain your options, and recommend solutions that make sense for your home.

You can expect:

  • Thorough system inspections

  • Straightforward recommendations

  • Skilled workmanship

  • Respect for your home and your time

Our goal is to make the entire process simple, transparent, and stress-free.

What's Next?

Get a quote

Call or Send In A Form

Get scheduled

We'll Confirm Your Estimate Date

Wait & Relax

Service Date Set

Mini Split

Dependable Solutions for Your Home

Ductless Mini Splits

A reliable ductless mini split system plays a critical role in maintaining consistent comfort for your home. Lambert Heating and Air Conditioning provides professional mini split installation and repair services designed to deliver efficient, zone controlled heating and cooling with with energy savings to your home.

Our team works with a wide range of residential spaces to install new ductless systems, troubleshoot performance issues, and complete repairs that restore comfort quickly. We prioritize clear communication, timely service, and long term solutions that maximize efficiency and system reliability, allowing you to stay comfortable in your space.

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