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HGH Mechanical 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! 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 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.
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What we do: Residential and light commercial installation of gas & oil furnaces, air conditioning, boilers, air cleaners, gas line, fireplace, heat pumps, geothermal systems, humidifiers, venting & ductwork. 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 service all manufacturer brands of furnaces, air conditioners and boilers, such as Carrier, American Standard, Bryant, Burnham Water/Steam Boilers, Heil, Luxaire, Payne, Rheem, 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 (see testimonials from our many happy clients at right). Call an HGH Mechanical Expert today for a quote on your new heating, ventilation, and air conditioning installation and service.
Check the filters (HGH will replace filters with new homeowner-supplied filters if requested),. If you are looking to replace your equipment, we will be happy to arrange a free estimate to determine what equipment is best suited for your lifestyle. Call an HGH Mechanical Expert today for a quote on your new heating, ventilation, and air conditioning installation and service.
The Air Conditioning Contractors of America Educational Institute Standards Task Team is currently reviewing the maintenance standards of residential HVAC systems. The standard provides the minimum requirements for inspection of residential HVAC equipment in. It's that time of year - the time when the weather is so crazy with fluctuations, sometimes you don't know if it will be 50 degrees or 80 degrees on any given day. Heat pumps in HVAC systems also might be failing in the late spring and early summer.
Reviews (21)
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A. Gru
Feb 19, 2022
Had some gas line work completed by HGH Mechanical. Wonderful customer service from start to finish! Thank you for being a reliable local company!
William Dowling
Jan 20, 2022
We had a great experience with Phil Hobbs from HGH. We need fast assistance with a leaking radiator. He was at our home in a couple hours. He fixed the problem quickly and the bill was reasonable. I plan to call HGH about modernizing our entire HVAC system. Service: Heating system repair
Susan Frazier
Jan 02, 2022
I called HGH the next day someone came look at what I needed and gave me a great price on my new HVAC system and the next day the team was out installing it. They were very professional and and even cleaned up after. I called to get an appointment to get winter check-up on the system and to change the filters and was given a 7:45am appointment. Steven came right on time and with a great attitude. He was very professional and got everything done in a very timely matter. HGH is wonderful!
Capitol City Wings
Dec 28, 2021
Be very careful hiring this company, be sure to ask about their trip charges, after hour fees, and any other fees beforehand. My wife reached out to this company to take a look at the HVAC system at her investment property in Baltimore and was charged a trip fee, after hour fee (mind you the tech was only there to 4pm not late at night), and some other fee that does not make any sense, especially since the problem they claimed to cause the issue turned out not to even be a factor.

At no time was my wife told there was a trip charge or after hour fee after 3:30 pm. The tech opened the furnace and after some time told my wife the new system needed a new control panel, which would be covered under warranty but HGH charges for processing the warranty for the customer. The tech left to get the part, claims to come back with the part which he never showed her and then says its still not working.

My wife then asks if it's common for two (previous part in the new system & new part the tech picked up at the store) parts to not function properly because she knew something wasn't right. He said he couldn't figure it out and his boss would come on Monday to take a look at it. Another guy comes on Monday after the weekend and said another issue was the problem not the system needing a new control panel. Thankfully my wife decided not to more forward with having this company do any work on the HVAC. Bottom line she was charged fees that she was not aware of & for the time wasted on a false diagnosis, which is not at all her fault and should not have been her expense.
Dorothy Singleton
Dec 16, 2021
The most professional, knowledgeable, always on time. I had the best experience working with this company. I will use them again if I need anything done. I highly recommend HGH for your needs. Dorothy Singleton Services: Install thermostat, Install AC, Heating system maintenance, HVAC duct & vent installation, Ductless heating & A/C services, Installation, Heating system installation
Ellen Plaine
Nov 01, 2021
HGH team installed gas lines inside my home to be used for converting my 2 wood burning fireplaces to gas. There were many steps to coordinate with BGE contractors, county inspectors, Miss Utility, and hearth installers and HGH had to work around all the other contractors schedules, as well as their own. They were flexible and adapted to the ever changing schedules.

While they could not promise no holes in my ceiling, they took extreme care and were successful in not having to punch holes in my ceilings to run the pipes. They did a neat, non- intrusive install, cleaned up, and kept me apprised of the project. When I had the need to call them, my calls were answered promptly. The technicians were very friendly, pleasant, and very experienced. I had confidence that they would deliver their services as promised
Donald Miller -Mdh
Oct 04, 2021
HGH installed a new furnace, heat pump, and thermostat for our home. They were punctual, professional, thorough, and the new systems look and work great. The prices were reasonable for the amount of work and materials. Services: AC installation, Heating system installation, Thermostat installation
Stephen Landy
Jul 29, 2021
My AC was running weak and I had another company come to check it out. They said I had an R22 unit and the compressor was bad and both the condenser and the evaporator needed to be replaced and later gave me a quote of $14k. A friend of mine recommended HGH for a second opinion as they had a good experience with them previously. HGH came out and told me I didn't have an R22 unit and that it only needed a recharge. Costs me $410, which is a far cry from $14k. I highly recommend them.
Diane L.
Jul 13, 2021
I called HGH for AC service/maintenance, but then had some water start backing up into the room, so I asked to move up my appointment. They were very accommodating and it was a relief to have the issue taken care of quickly. Chris showed up during the scheduled time and even sent a text that he was on his way. He seemed very thorough and completed the work promptly. I was very impressed by this company and for a fair and reasonable price.
Allison Harbuck
Apr 19, 2021
HGH is amazing. We have used them religiously for all of our properties the past 5 years and they are always on time, reliable, and give great service for a very fair price. We replace at least a few systems each year and between maintenance and replacement, they are always the best. Services: HVAC duct & vent repair, Install thermostat, Thermostat repair, Install AC, Heating system maintenance, A/C system maintenance, HVAC system maintenance, Repair HVAC, Heating system repair, A/C system repair, Heating system installation
Michael Bell
Apr 12, 2021
Dan K did the initial site review. He was very knowledgeable and helpful in selecting the right equipment for the job. Tom F and Adam L and the install crew were extremely professional. The install is very clean with professional craftsmanship. Finally, pricing was competitive. Services: Install AC, Heating system installation
Allison Cuneo
Feb 20, 2021
We had a wonderful experience with HGH Mechanical this week. Our furnace went up right before the Christmas holiday and they were able to fit us in for an efficient one-day installation. From our first interaction with DJ, who diagnosed the issue -- to our meeting with Dan to discuss our options for installing a new unit -- to our pre-installation meeting with Manny, an owner -- we felt like we were in good hands every step of the way.

Our day-of technicians, Nate and Colby, did an excellent job explaining the work they had done and gave us a comprehensive tutorial on our new system which included a new WiFi thermostat! We would absolutely recommend HGH to anyone in need of the services they provide. We can't speak highly enough of this experience and we will certainly call them again in the future.
Dh W.
Aug 10, 2020
Really helpful nice experts, who showed up promptly and installed our UV lights too! They also were careful with our home and our COVID precautions Thanks so much.
Carolyn R.
Apr 30, 2020
Some 24 years of great service, HGH is still our go-to. They installed this old house's 1st central unit. Two boilers and a hot water storage tank later, we invited them back to replace our 24-year old Central AC unit. They are always professional, responsive, and reasonably priced, with all installations and maintenance, while considering all options. https://hghmechanical.com/
Joseph M.
Mar 17, 2020
I recently engaged this firm for the first time. As my Wife and I renovate our home, our gas-log fireplace required repair and equipment replacement. HGH Mechanical was recommended by the equipment supplier. HGH replaced the gas line and provided for the gas hook-up to the new gas-log system. Matthew and Christian, the HGH technical professionals who completed the job, were extremely professional, polite, and competent. Pricing was very reasonable. I highly recommend HGH Mechanical for your consideration if you require gas-log work performed in your home. Joseph
Adam S.
Jul 29, 2019
I returned from a European Vacation to 87 degrees in my house. The a/c would not come on at all. I called HGH Mechanical and Chris Rotundo was at my door within 45 minutes. He was fast, friendly, and fixed the problem. I will use HGH for my future hvac needs. A+
Barbara W.
Jul 20, 2019
We got a new HVAC system in December 2018 and recommended HGH to my 85 year old mother when her AC went up a few weeks ago. Special thanks to Nate and Adam for crawling around in her attic and getting the install done on one of those incredibly hot days. She's very happy with her new system, the price was reasonable and the work was done promptly. We recommend HGH to all of our friends and family!
K. F.
Jun 21, 2019
Just had a new AC unit installed in my parents home with HGH and we couldn't have been happier. The price was great and the work was first class. Nice guys, too!
Ali T.
Feb 11, 2019
I've been using HGH for almost a decade. My parents use HGH. I refer all my friends to HGH. They are fast, responsive, reasonably priced, and don't over-sell you anything. I have had them service existing units at properties I bought, and have had them install two total hvac systems in two properties. I have no complaints. If you are thinking about getting a service contract, you should hire HGH. If you are thinking about getting a new HVAC system, you should at least get a quote from HGH. and then hire them.
Rex H.
Aug 24, 2017
2nd time I've called them for AC problems. Great experience both times. Called this morning at 7 and they were here by noon. It was a quick and easy fix and then the technician gave the whole system a once over to make sure everything else was in order. He was done and gone in no time and the price was absolutely reasonable. I'll definitely call them the next time i need AC or heating work done.
Kenneth S.
Aug 29, 2016
A/C needed a run capacitor (a $5 part) a couple years ago and these guys charged us $250 to replace it. Doesn't matter how nice a thief is if he's stealing from you. I'm fine with people making a living, but that was crooked. My wife called him on it and he got nasty with her. I will never deal with them again.