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Hvac Detective

Central A/C Service or Repair, Heat Pump Repair or Service, Gas Furnace / Forced Air Heating System Repair Service,

About us

We detect it and correct it, no ifs' ands or buts about it! . You want it to run "forever" or just untill you get the financing needed to satisfy the big company that told you you need a replacement ; I'll make you just as comfortable as a brand spanking new system. How can I do this ? I've been out here 30 years.

Business highlights

Emergency services offered
Veteran owned and operated
21 years of experience

Services we offer

Central A/C - Service or Repair, Electric Furnace: Repair, Heat Pump - Repair or Service, Oil Furnace: Repair

Amenities

Emergency Services

Yes

Warranties

Yes

Reviews
4.6124 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
52%
4
11%
3
2%
2
0%
1
2%

Filter reviews by service

Showing 1-25 of 124 reviews
Jay W.
Jun 2025
5.0
Central A/C Service or Repair
$3,250
John Norwood is awesome! He is an eccentric, friendly guy who likes to talk. If you take the time to listen, you will learn a lot about your system and HVAC "philosophy" in general. He has saved us thousands of dollars. He comes a long way to work on our unit an stays at it until the job is done.

William B.
Jul 2024
1.0
I've hired John for both plumbing and AC work. He is "All hat, no cattle." All talk, no action. He UNDERSTANDS plumbing and HVAC work, he just can't get it done right. Also, can't keep tenant names, addresses and phone numbers straight. Doesn't keep appointments. When he finally shows up at a job, it is generally without the equipment he needs, due to his disorganization. So he doesn't do the repair right, and you have to fix what he did when you hire someone else to do it right. Go out of your way to avoid this guy. He is a borderline public nuisance.

David F.
Nov 2021
4.5
Central A/C Service or Repair
Yes, I recommend this pro
Very professional

Robert L.
Dec 2020
5.0
Gas Furnace / Forced Air Heating System Repair Service
Yes, I recommend this pro
very through

Jolene G.
Aug 2020
1.0
Central A/C Service or Repair
$10,000
I hired John to replace Central air and add 2 mini splits to my upstairs. He had 2 workers install one of the mini splits unsupervised. They did not install the mini split correctly and we found a large amount of water dripping on to our newly refinished hard wood floors. The leak causes cupping and warping of the a portion of the floor. He was very resistant to accepting responsibility for the damage. He even told us to close the door, it's just cosmetic. We sent him an estimate for repair from the floor expert who had just done the floor. John balked at it. He tried to blame the AC itself. He refused to give us his insurance information so we had to file a complaint with Maryland board of HVAC to get insurance info. I obtained 6 estimated to repair the floor. All recommended replacing the damaged wood and resanding/stain al of the floor to match. He balked. Said he would fix it himself. He finally agrees to a partial fix of replacing the damaged wood only and we accepted that! Due to his responses, I reached out to BBB for help. John had blocked our number and will not respond, That is concerning, as we have a warranty and expect that to be honored. Please be aware that John did NOT obtain a permit for the job as we expected. His work was not inspected. We agreed to accept the partial fix. He started with a partial payment. Since he saw that I reached out to BBB for help, he has refused to pay any more. He wants to go to court and does not understand that he may have to pay court costs and full repair of the floor. We have had countless workers in our home over the last few months with no issues. John has been very difficult and shady to work with. He took the electricians extension cord. I ask you to beware and get insurance info before hiring and make sure you get a permit. As of now, we are waiting for response back from Board of HVAC investigation into his work. He only accepts CASH. He refuses to pay the rest now or discuss it. It is not worth the HASSLE.
Response from Hvac Detective
"This is one of the rare instances while working in extreme weather conditions, very excessive heat conditions and the urgency that will company, along with the efforts to get the customer air conditioning, mistakes were made by sheer accident. Very Very rare and I'm proud to say it. We try our best to make the customer whole again. we really do."

Mary B.
Aug 2020
5.0
Central A/C Service or Repair
Yes, I recommend this pro
Great service very knowledgeable

Lynette R.
Jul 2020
5.0
Central A/C Service or Repair
Yes, I recommend this pro
Very knowledgeable and quick response. Definitely hire this company for your HVAC needs

Jim F.
Jun 2020
5.0
Central A/C Service or Repair
Yes, I recommend this pro
$1,000
We had a B*E service contract for years and they finally said we needed a new $8K unit. In these times, who has $8K to throw around. Still, we needed to do something. I came to HomeAdvisor and filled out a form. John got back to me within hours. I explained what B*E said and he said he could do a new unit for $5K --- but, "let's look at what you have." John noticed that a previous equipment failure damaged the evaporator - something that B*E should have noticed and fixed under the contract, but instead just pushed a new unit. John replaced the evaporator and balanced the entire system. The A/C is working great. During the entire process, I hung out with John as he worked. He is very knowledgeable and more that willing to share his wisdom. He explained everything thing he was doing and why is was necessary. I have always preferred to have someone I know and trust take care of my home repairs. I now have someone for my heating and air conditioning. Thanks John! P.S. Ty is still looking for you!
Response from Hvac Detective
"My customers and their pets are the reason that me, at 62 yrs old, still answer the phone "personally"."

Jerry T.
Jun 2020
5.0
Central A/C Service or Repair
Yes, I recommend this pro
Honest, informative and on time. We would highly recommend his service.
Response from Hvac Detective
"I was so welcomed by this family, I went to their church. Something about followers of "Christ"."

Darcy H.
Jun 2020
4.0
Central A/C Service or Repair
Yes, I recommend this pro
$300
I was pleased with both the work and the value of Norwood Heating and Air, but customers should know that this company does not currently accept credit cards for payment and plan accordingly.
Response from Hvac Detective
"The Banks have no " interest" in Norwood Heating and Air!"

Gordon T.
Apr 2020
5.0
Gas Furnace / Forced Air Heating System Repair Service
Yes, I recommend this pro
Responded quickly and made repair in a timely manner

Marcie C.
Sep 2019
4.5
Central A/C Service or Repair
Yes, I recommend this pro
$135
Responded quickly to my need
Response from Hvac Detective
"I would do this work for nothing iF my wife would let me ,NOT!"

Ofuje D.
Jul 2019
5.0
Central A/C Service or Repair
Yes, I recommend this pro
$220
Mr. Norwood has over 30 years of experience and he can teach you everything you need to know about HVAC all while fixing your issue.
Response from Hvac Detective
"my customers have been and continue to be the nicest people me and my wife have ever encountered."

Joyann B.
Jul 2019
4.0
Central A/C Service or Repair
Yes, I recommend this pro
Very informative, they offer great advice on maintaining your units.
Response from Hvac Detective
"Maintenance maintenance will save any homeowner thousands of dollars. My customers seem to know that! This is not our fathers equipment."

Robert T.
Feb 2019
5.0
Yes, I recommend this pro
Came when called. Had to get parts back next day and got furnace running.

Lawrence P.
Jan 2019
5.0
Central A/C Service or Repair
Yes, I recommend this pro

Mae R.
Aug 2018
4.0
Central A/C Service or Repair
Yes, I recommend this pro
Norwood was great! They came out the next day, provided solid evaluation of the issue, and even recommended that I contact the warranty company. Due to that they ended up doing less of a job, but saved me money and earned my trust by sacrificing their income for quality service.
Response from Hvac Detective
"My customers are still the best in the industry; and I've been in a for 35 years!"

Carol G.
Jul 2018
5.0
Central A/C Service or Repair
Yes, I recommend this pro
John is wonderful. He talked me through the entire process, and also educated me on what to do to avoid future problems with our AC. Rob, his technician, is a hard-working young man who also did a great job!
Response from Hvac Detective
"I have the best c customers in the world especially since I'm not exactly Mr. tactful in the communication process; as a matter of fact my wife says "say as little as possible", or at lease wait till you get paid! Thank you."

Dan I.
Jul 2018
5.0
Central A/C Service or Repair
Yes, I recommend this pro
Very knowledgeable and experienced
Response from Hvac Detective
"The high efficiency equipment has become entirely too complicated... EVEN FOR MYSELF! CHANGES are happening so quickly I can barely keep up and I've been doing it for 35 years. I don't know how my customers do it..... but they do with a little help!"

Branden T.
Jul 2018
5.0
Central A/C Service or Repair
Yes, I recommend this pro

Jeff J.
Jan 2018
5.0
Heat Pump Repair or Service
Yes, I recommend this pro
John has my business for the rest of my days, very professional and quick. If you have an issue for HVAC look no further because this is the guy you need.
Response from Hvac Detective
"Everytime I get a review such as this I am good for another 6 months."

SUSAN A.
Nov 2017
4.0
Gas Furnace / Forced Air Heating System Repair Service
Yes, I recommend this pro
$100
informative, personable, and friendly.

David S.
Nov 2017
4.5
Yes, I recommend this pro
Great check up after job is complete! Informed me of what needs to be done. Got me up and running.
Response from Hvac Detective
""Norwood heating and air conditioning" have the best customers in the county. We love you all!"

John K.
Oct 2017
5.0
Central A/C Service or Repair
Yes, I recommend this pro
he was very efficient and on time like promised
Response from Hvac Detective
"Norwood heating and air conditioning have the best customers in the county. My wife and I love you all!"

Kathy K.
Oct 2017
5.0
Yes, I recommend this pro
Came on time was very friendly and informed me of the problem and what he did to correct it. Took his time and didn’t rush. I appreciated his patience and how he took care of business.
Response from Hvac Detective
"Norwood heating and air conditioning have the best customers in the county we love you all ! "especially the customers that do not rush us" thank you"
Showing 1-25 of 124

Licensing

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

Hvac Detective is currently rated 4.6 overall out of 5.

Monday: 7:00 AM - 9:00 PM Tuesday: 7:00 AM - 9:00 PM Wednesday: 7:00 AM - 9:00 PM Thursday: 7:00 AM - 9:00 PM Friday: 8:00 AM - 6:00 PM Saturday: 7:00 AM - 9:00 PM Sunday: 7:00 AM - 9:00 PM

No, Hvac Detective does not offer free project estimates.

No, Hvac Detective does not offer eco-friendly accreditations.

Yes, Hvac Detective offers emergency services.

Yes, Hvac Detective offers warranties.