Baltimore’s Most Trusted HVAC Company

Serving Bel Air, Harford & the Baltimore metropolitan area.

HVAC Baltimore Harford County


Affordable HVAC Sales & Service

Serving Bel Air, Harford & the Baltimore metropolitan area.

Protecting Those You Love

Breathe Easy with 24/7 Indoor Air Purification.

Award-Winning Service

Celebrating Our 500th 5-Star Review!2021-HVAC-Contractors-Service-Awards-Bel-Air-short

We're Experts at Installing Gas Fireplaces

In 2003 alone, we installed over 550 gas fireplaces and gas log sets.

Need Emergency Service? Call us at

We offer a 100-percent satisfaction guarantee on all of our services.


“Superb Professionalism!”

“Called HGH for a second opinion. The other company had diagnosed a $500 repair, but Phil solved the issue immediately…. and only charged the service fee. Superb professionalism and customer service!” —Mike Jacobson

“Saved Me a Bundle!”

“Matt just saved me a bundle by correctly diagnosing the problem and solving it for a faction of what I was expecting to spend. Did not even charge me for the part they ordered and did not need! Highly Recommend.” —Bill Greskovich

“A Fair Price…”

“I reached out to HGH after the contractor that my home warranty assigned to me never showed up or called. Phil was courteous, professional, and gave me a fair price that was lower than my home warranty’s deductible. I highly recommend HGH!” —Aleksey

“Most Competitive”

“Replacing an aging AC unit, they offered us the most competitive quote. They recently came out with same day service for no additional cost. Our tech DJ was super-efficient, polite, and professional. I highly recommend HGH Mechanical.” —Ivan Borissow


“As usual the team from HGH (Adam, Tom, & Chris) were outstanding! The installation process for our new HVAC system was painless…we could not ask for more. The HGH team has always treated us right!” —Richard Barton

“Recommend 100%”

“I was very impressed by their product and everything else. Did a great job! Very nice people and price was better than the other two quotes I received from other companies. Trust me, they are very good!!!! I recommend 100%.” —Richard Perez


“We recently had our upstairs unit stop working on us. Nate and his crew were able to install the new unit in our attic without issue and great professionalism. Thanks again for making this entire install and purchase go smooth.” —Paul T Burton, State Police

“Excellent Service”

“Excellent service. Fuel oil furnace & heat pump residential install. I got about 5 estimates and I interviewed all the contractors. They came on the scheduled day, worked fast, and cleaned up when done. No problems.” —TJ Dickens

“Amazing Job”

“Jimmy, Phil and their team did an amazing job on the removal of our old boiler and the install of a new one along with a hot water heater. Seriously, the install looks like art. I highly recommend them and will be passing their name on….” —Nicholas Griner

“Affordable & Honest”

“I wasn’t sure if my heating unit needed to be replaced or repaired. DJ came out and after a quick fix said everything else was in working order. These guys are professional, affordable and most important honest.” —David Resnick

“Never Going Elsewhere”

“This is the second time we have used HGH Mechanical. HGH responds quickly and the prices are extremely reasonable. We highly recommend them and we will never consider going elsewhere. Thanks DJ and HGH Mechanical.” —Wendy Chaney

“Charged Less”

“My heat not turning on. I saw recommendations for HGH so I gave them a call and they came out the next day, got everything fixed and charged less than other companies quoted us just to diagnose the problem. Will definitely be recommending to everyone!” —Britt Johnson

“Reasonable Price”

“Heat went out last night. Called HGH at 9 AM today, heat pump was fixed by 10:30 AM at a reasonable price. No complaints whatsoever, will definitely be calling next time we have HVAC needs.” —Adam Bauer

“Tech Was Excellent”

“We called and they were at our door in less than 24 hours. Our tech Christopher Rotundo was excellent. HGH is a highly respected organization that I would highly recommend to anyone with heating and/or AC needs.” —Sarah Lambeth

“Within an Hour!”

“My AC unit was not working properly and I called HGH for help. They had a tech at my house within an hour. Chris was very professional and extremely helpful. He repaired the unit within an hour! I’m a very happy (cool) customer!” —Ramona Birkmaier

“Thanks a Ton”

“No heat, next day appointment in the morning to mid afternoon, great knowledgeable, in an out less than an hour and a half and we now have heat on these cold days. Thanks a ton.” —Dante Guzman


HGH Mechanical: Affordable HVAC Sales & Service in Harford, Baltimore County and Surrounding Areas

HGH Mechanical, Inc. is one of the leading HVAC service providers of heating, ventilation, and air conditioning installation and service in and around the Baltimore metropolitan area. Serving local Bel Air, MD and surrounding residential and light commercial markets (Baltimore/Harford Counties) for two and one half decades, we specialize in finding cost effective solutions for our customers – whether they are installing HVAC systems for the first time, or expanding their existing systems.

HVAC Baltimore Harford County

Air Conditioning Repair & Service


Gas Fireplace Installation


System Upgrade

About HGH Mechanical, Inc.

Our vision is to be recognized as a leader with residential and the light commercial HVAC industry in and around the Baltimore Metropolitan area. We reach this goal by achieving high sales and a reputation for diagnosing and servicing HVAC equipment and systems promptly and correctly. In order to achieve this vision, we sell high-quality, state-of-the-art equipment that is energy efficient and environmentally safe. We are committed to our customers, and accordingly, we concentrate our efforts on servicing the equipment we sell with trained technicians.

Harford County MD Air Conditioning Repair & Service

Call HGH Mechanical today for a quote on your new comfort system.

HVAC Services

We service all manufacturer brands of furnaces, air conditioners and boilers, such as Carrier, American Standard, Bryant, Burnham Water/Steam Boilers, Heil, Luxaire, Payne, Rudd, Trane, Weil McLain Water/Steam Boilers, Williamson Water/Steam Boilers, and York equipment.We pride ourselves in the state-of-the-art equipment and systems we carry and the superior service we deliver.
We offer our customers service plans and services that can include:
HVAC Baltimore Harford County

Harford County MD Air Conditioning Repair & Service

Call an HGH Mechanical Expert today for a quote on your new heating, ventilation, and air conditioning installation and service.
HVAC Baltimore Harford County
HVAC Baltimore Harford County
HVAC Baltimore Harford County

HGH Mechanical Air Conditioning Repair & Service

Call an HGH Mechanica today for a quote on your new comfort system.

Pin It on Pinterest