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McDonnell Mechanical Services Inc

Heating and Air Conditioning, Air Duct Cleaning

About us

McDonnell Mechanical Services (MMS) is a customer-focused heating, air-conditioning and ventilation company located in West Dennis, MA. We are State licensed (oil & gas) and fully insured serving the commercial and residential market of Cape Cod at a fair cost. McDonnell Mechanical Services technicians are fully certified and factory trained. Our staff keeps up with the latest building code changes, and we will identify and obtain the necessary permits for all installations. We will arrange all needed inspections by fire or gas inspectors.

Business highlights

19 years of trusted experience
Emergency Services Offered

Services we offer

Heat, Heating, Cooling, Customer Focused Heating, A/C, Air Conditioning, Ventilation, Gas Burners, Oil Burners, Repairs A/C, Repairs Burners, Maintenance A/C, Maintenance Burners, Maintenance, Fix, York Products, Mitsubishi Products, Ductless Splits, Refrigeration, Cooling Systems, Repairs Refrigeration, Walk-In Cooling Systems

Services we don't offer

Ask for details

Amenities

Free Estimates
Yes
Warranties
Yes
Emergency Services
Yes


Accepted payment methods

American Express
Check
Discover
Financing Available
MasterCard
Visa

Photos of past projects

Reviews

4.729 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
79%
4
0%
3
3%
2
10%
1
7%


Rating CategoryRating out of 5
quality
4.9
value
4.2
professionalism
4.9
responsiveness
4.9
punctuality
5.0
Showing 1-25 of 29 reviews

Grant S.
06/2021
5.0
heating & air conditioning/hvac
  + -1 more
We had an awesome experience with Jim from McDonnell. Our AC went out in the middle of this heat wave. Our landlord called and McDonnell sent Jim out this morning (on very short notice). He spent the last 3 hours troubleshooting what turned out to be a complex electrical issue that impacted the HVAC and ultimately figured it out and fixed the issue. Insanely professional, polite and proactive. Thank you.
Description of Work: Urgent AC issue

Rating CategoryRating out of 5
quality
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Janet W.
01/2021
3.0
heating & air conditioning/hvac
  + -1 more
they send a tech to remedy the problem, and then after several days they send another tech who was never really here very long and just looked on the system, service were over the top or too high, and I got charged 2 separate bills and the charges was too high.
Description of Work: for service of our Air Conditioner
Rating CategoryRating out of 5
$500

kevin A.
06/2016
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: Installed split ductless system

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$17,000

Audrey P.
05/2016
1.0
heating & air conditioning/hvac
  + -1 more
This business took over generator service contract from a person who retired. Tech came to service generator and told me I needed a starter and that someone would get back to me. I waited for 5 days and then had to call them. Was told that someone would call me with price info. Never got a call. I then called back and an appt was set up for May 20 at 3:30 pm. Came home from an event early so that I would be here. No one came nor did anyone call.
Description of Work: Nothing. They never showed up. Had an appt to fix generator. Appt set up by their tech person for 3:30. No one showed.

Rating CategoryRating out of 5
quality
1.0
professionalism
1.0
responsiveness
1.0
punctuality
1.0

$274

Michelle C.
01/2016
2.0
heating & air conditioning/hvac
  + -1 more
DO NOT SAY YOU GOT THEM FROM ANGIE'S LIST! This company actively screens out Angie's List customers! They ask where you heard of them, and if you say Angie's List, they tell you they are no longer taking AL people, only those who have been referred by existing customers. They said they got too many inquiries from AL members wanting just estimates; that they are not the cheapest; and they are too small to handle the volume. Must be that AL folks members evaluate too much on price for their liking! The lady on the phone was polite but the message was still pretty offensive. There are more professional ways to handle it than to blow people off because they heard about you from the wrong source. I'll take my business elsewhere.
Description of Work: I called to ask about replacing hot water heater and furnace

Rating CategoryRating out of 5
professionalism
1.0
responsiveness
2.0


ADAM V.
09/2015
5.0
heating & air conditioning/hvac
  + -1 more
After an energy audit and recommendations for heating/ac improvements, McDonnell was one of three bids received for installation of a ductless heating pump system for our one level home. As expected the three design recommendations differed as did the bids but McDonnell's thoughtful design and proposal, which was revised to accommodate our requests after consulting with Jim McDonnell, was the most appropriate for our home. The cost was slightly higher than the lowest but considerably lower than the highest bid. In terms of customer service, they were responsive, and always on time (which in our area is not the norm). Despite their demanding schedule they were able to fit us in to suit our timetable, and fortunately just before a heat wave. The crew was the most professional and courteous we have encountered since moving here 6 months ago. They took extra care, working quickly and efficiently in several rooms and the basement. We were eligible for two rebates which reduced the cost by about $1800. McDonnell's filled out all the paperwork and submitted the rebate claims for us, a service we didn't expect. The units have been fantastic (we highly recommend the Mitsubishi products) and have performed just as Jim told us they would - extremely quiet, running at the lowest fan setting, they have kept the entire house comfortable and cool and substantially lowered the humidity which was important to us because of new hardwood floors we installed. Hopefully we won't experience another winter like last year's but we are expecting to see consdierably lower heating costs with the new system. Our experience with McDonnell's could not have been better. It's easy to see why they have such a great reputation in this area. We highly recommend them.
Description of Work: Installed 3 Mitsubishi Ductless Mini-split heat pumps.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$9,600

Robert D.
06/2015
5.0
heating & air conditioning/hvac
  + -1 more
They were great. No issues with them what so ever.
Description of Work: Replaced my entire central air conditioning unit.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$3,500

Maclyn L.
12/2014
2.0
heating & air conditioning/hvac
  + -1 more
Tech was polite and appeared knowledgeable. He changed filter and gave me some tips on maintaining unit. We have window units in the bedrooms and we had only used the central a/c a few times during a fairly cool summer, but it had worked well enough. I was surprised when the tech took me out to the unit and showed me two pieces which, he asserted,had shorted as he was checking the unit. Fortunately, he just happened to have replacements in his truck. When I scheduled the appointment I was told in no uncertain terms that as a new customer I would be required to pay in full upon completion of the service. Bill came to about 273.00 which i thought was a bit steep, but acceptable. I was somewhat surprised to receive an additional bill for about $53.00 via email a few days later. The accompanying explanation was that the office is closed on Saturdays so the bill I was told was the full price--wasn't. Again, the call was not an emergency, but a regularly scheduled appointment, so it is unclear why the bill required correction. Others might find my experience unexceptional, but malfunctions of previously working parts when the tech happens to be present and payments in full that are not lead me to think that i might be better off with another provider in the future.
Description of Work: Annual central a/c service

Rating CategoryRating out of 5
quality
4.0
value
1.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

$320

Jayne M.
11/2014
5.0
heating & air conditioning/hvac
  + -1 more
He was fabulous. He was rated very well. He said that he had to get his name off Angie's List, because he was getting so many inquiries. He is a little more expensive than somebody else, but I'd rather pay more.
Description of Work: I used McDonnell Mechanical. He is handling all my heating and AC. We have a contract with him, and he came 2 weeks ago for a check up on my furnace. We had to replace our AC, and we had to have a bunch of work done on our heating.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Jayne M.
11/2014
5.0
heating & air conditioning/hvac
  + -1 more
He was fabulous. He was rated very well. He said that he had to get his name off Angie's List, because he was getting so many inquiries. He is a little more expensive than somebody else, but I'd rather pay more.
Description of Work: I used McDonnell Mechanical. He is handling all my heating and AC. We have a contract with him, and he came 2 weeks ago for a check up on my furnace. We had to replace our AC, and we had to have a bunch of work done on our heating.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Tatiana Y.
09/2014
1.0
heating & air conditioning/hvac
  + -1 more
The provider is no longer a member of Angie's List. Their membership was terminated with Angie's List, but for some reason Angie's List still lists them which leads to miscommunication. AL people should really pay attention to updating their membership.
Description of Work: N/A
Rating CategoryRating out of 5

Veronica G.
05/2014
5.0
heating & air conditioning/hvac
  + -1 more
I purchased a preventative maintenance and annual service contract for my home heating and air conditioner. As promised they contacted my a few weeks ago to make an appointment to service my A/C unit. It does give me great peace of mind to know that when I need turn on my heat and A/C they will work properly and efficiently. I highly recommend this service. This is the 2nd year I have done this, and it has worked out great. In addition to this service I have used their services in the past couple of years and was extremely pleased with the service, promptness and price.
Description of Work: Annual A/C unit service.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$300

james H.
01/2014
5.0
heating & air conditioning/hvac
  + -1 more
showed up on date and time workmanship was excellent and performed in a professional manner
Description of Work: McDonnell installed a whole house a/c system.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$3,000

Kevin W.
09/2013
5.0
heating & air conditioning/hvac
  + -1 more
First of all, they were responsive. One of our A/C units/zones blew on Sunday, June 30 (the second day of a six day heat wave during the week of July 4th). Others were booking 3 weeks out, but McDonnell came in 2 days. They came and assessed the situation, discussed our options, ordered the parts and returned for installation first thing July 5th. They were communicative. When the new unit was started/being tested, other issues (which would have required massive "investigation" to find originally) were discovered. We were given some options/recommendations, but WE went with the "fix" not the "solution" and we worked out a long-term plan. There was no pressure to get additional work done. They were extremely professional. Representatives always wore uniforms, were polite and never left debris. I was always given notice as to arrival time (and they were prompt, despite our distance and summer traffic). They always answered the phone and always returned after-hour messages promptly. One week out, they called to make sure things were still running smoothly. Zero complaints.
Description of Work: They removed the existing a/c condensing unit (4 ton) along with it's wiring and piping. They replaced and leveled a new pad then installed and connected wiring and piping to the new unit. They did triple evacuation, and charged the system. They performed several diagnostic tests, found other issues and fixed them. I am not technical, but I know that they performed many diagnostic tests that were above and beyond industry standard procedure.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$3,000

Joan M.
08/2013
5.0
heating & air conditioning/hvac
  + -1 more
They began the work earlier than they estimated and it was completed quickly. The system works great. They followed up on the installation.
Description of Work: Installed a Ductless Air-Conditioning and Heating Unit in my home

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$3,700

Catherine G.
06/2013
2.0
heating & air conditioning/hvac
  + -1 more
The person who answered the phone was very friendly & helpful but I did not get a call back from the salesman.
Description of Work: Asked for estimate on installing a new boiler

Rating CategoryRating out of 5
professionalism
3.0
responsiveness
1.0


Rhonda M.
03/2013
5.0
heating & air conditioning/hvac
  + -1 more
I would have hired him in a second. I hired somebody who is closer to my home. It is a second home and they also service my heating service. I liked that he was unbelievably thorough in his estimate. He was very insightful and very honest. He was a little higher. He really knew what he was doing. He got tied up in the meeting and called me 4 times in a day because he couldn't come for the appointment. They quoted $6000 for the job.
Description of Work: McDonnell Mechanical Services Inc gave me an estimate for heating & a/c service. Jim is the owner of the company.

Rating CategoryRating out of 5
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Bob B.
11/2012
5.0
heating & air conditioning/hvac
  + -1 more
Work was performed over a two day period. Estimate and review of the premises for placement of units was done by Jim McDonnell, the owner of the company himself. Since my Cape Cod home is some 170 years old, a concern was that the installations took into consideration aestetics, including the age and style of the house, to the fullest extent possible. The final product fully addressed this concern. In fact, all work was done with the highest degree of skill and professionalism. Mr. McDonnell reviewed the intallers work product personnally to insure that all was completed as agreed to, both contractually and orally. Installers were knowlegeable, friendly and neat. In doing their work, they were very respectful of my home and its furnishings.The few issues that arose in the process were all resolved promptly and to my complete satisfaction.This is an excellent small company managed by an owner who is totally hands-on.
Description of Work: Intalled split system ductless AC/Heat Pump.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$5,600

Veronica G.
09/2012
5.0
heating & air conditioning/hvac
  + -1 more
I couldn't be happier with the service. There is a very pleasant women in the office to answer the phone and make appointments, and the technicians and owner are awsome. They showed up when promised and did what they said they would.
Description of Work: Of course on one of the hottest day's of the year my A/C decided to break down. After calling the last person who serviced my unit and being told he couldn't do anything to help me. I called a local company who was reccomended to me, when the sales person came out he immediatly told me I needed a new unit to the tune of $2,500.00. I went to Angie's List and found McDonnell Mechanical. From the very 1st call I made to schedule an appointment to the last time I had the technician out I have been extremely satisfied. At the initial appointment it was determined that an inexpensive part needed to be replaced. The owner Jim installed a temporary part, and I was up and running. Jim suggested that his lead technician should come out to do some other trouble shooting. On that appointment Shawn came out and spent a couple of hours checking things out, making minor repairs and explained what the next steps should be. Although there is a problem with my unit that will need to be addressed, I am very confident that I made the right choice and that we will get to the bottom of the issues.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$300

David M.
07/2012
5.0
heating & air conditioning/hvac
  + -1 more
Air conditioner unit failed on a hot & humid day. Called the installer but he never got the message. The next day when he called i told him I needed to find a reliable company to respond. On his recommendation I called jim McDonnell and his secretary said she would have a man there that afternoon around 2:30 and sure enough at 2:15 Shawn, the head technician arrived and with ten minutes had the diagnoses. It was either replace the with a new one or repair the compressor. The owner called back that afternoon and explained why it would be more economical to replace the whole unit with a new technology unit that would be cheaper yet more efficient than repairing the old compressor. The following Wednesday they removed the old unit and installed the one in less than four hours. The new unit is quiet and seems to operate less often to maintain a tempertaure. Very pleased. !! Dave Mac
Description of Work: Replaced an air conditioner unit. Punctal, courteous, on time and on price and the time to replace the unit was exactly as stated. Couldn't be happier with this company.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$2,200

Dawn W.
07/2012
5.0
heating & air conditioning/hvac
  + -1 more
It went well overall. Happy with the service.
Description of Work: The service is scheduled as requested, and the crew arrived on time. Although they didn't find the leak in the AC line, they added some Freon. The central AC is back to work right away.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$200

Neal C.
04/2012
5.0
heating & air conditioning/hvac
  + -1 more
Gas boiler stopped working (no heat). A tech came the same day I called. Cleaned boiler, replaced filter, noticed and repaired a leak in the inlet/outlet vent pipe. Very competent and professional. Rates may be a bit high, but well worth it to get the job done well on a timely basis. I signed up for an annual H/AC maintenance contract with McDonnell the next day.
Description of Work: Gas boiler repair and first yearly servicing.

Rating CategoryRating out of 5
quality
5.0
value
3.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$370

Valerie D.
02/2012
5.0
heating & air conditioning/hvac
  + -1 more
It went great. Nothing to complain about!
Description of Work: Fixed air conditioning.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$300

Edward S.
01/2011
5.0
heating & air conditioning/hvac
  + -1 more
This company's owner visited here on several occasions and was very courteous, thorough in inspecting the existing system, measuring the interior space, calculating the heating required and preparing a detailed estimate for a new system. He described the features and benfits of the new system and explained how he would install the new unit. He even reduced the initial bid by a significant amount because of our concern that the cost was too high. The second figure was still too much for us to feel that we would be able to get a reasonble return on the investment for a new furnace. As a result we decided not proceed further.
Description of Work: We requested an estimate to replace an existing furnace with a high efficiency system. The objective was to reduce our annual heating expenses with a system that would produce a reasonable return on the investment.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Neal C.
12/2010
5.0
heating & air conditioning/hvac
  + -1 more
Jim McDonnell recommended a split ductless AC unit for my new office. He seemed very knowledgable and provided thoughtful answers to my Qs. His price estimate was quite reasonable in my view. He agreed to do the installation in two separate visits due to ongoing construction. The installer (technician) was friendly and competent. I was especially impressed by how cooperative Jim M. was, adjusting to our construction schedule and accommodating unexpected challenges with the AC unit location I selected. If we should need additional AC work or service in the future, I will definitely call McDonnell again.
Description of Work: Installed a split ductless AC unit in a remodeled office over our garage.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$2,850
    • 1(current)
    • 2

Contact information

79 School St, West Dennis, MA 02670

http://www.mcdonnellmechanical.com

Service hours

Monday:
7:00 AM - 4:00 PM
Tuesday:
7:00 AM - 4:00 PM
Wednesday:
7:00 AM - 4:00 PM
Thursday:
7:00 AM - 4:00 PM
Friday:
7:00 AM - 4:00 PM

Licensing

Bonded

Insured

Eco-friendly Accreditations

LEED Accredited Professional
No
Energy Star Partner
No
EPA Lead-Safe Certified
No
Use Green Products or Work Practices
Yes
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 State Contractor License Requirements page.

*Contact business to see additional licenses.


Service Categories

Heating and Air Conditioning,
Air Duct Cleaning

FAQ

McDonnell Mechanical Services Inc is currently rated 4.7 overall out of 5.

Monday: 7:00 AM - 4:00 PM

Tuesday: 7:00 AM - 4:00 PM

Wednesday: 7:00 AM - 4:00 PM

Thursday: 7:00 AM - 4:00 PM

Friday: 7:00 AM - 4:00 PM

McDonnell Mechanical Services Inc accepts the following forms of payment: American Express,Check,Discover,Financing Available,MasterCard,Visa
Yes, McDonnell Mechanical Services Inc offers free project estimates.
Yes, McDonnell Mechanical Services Inc offers eco-friendly accreditations.
No, McDonnell Mechanical Services Inc does not offer a senior discount.
Yes, McDonnell Mechanical Services Inc offers emergency services.
Yes, McDonnell Mechanical Services Inc offers warranties.
McDonnell Mechanical Services Inc offers the following services: Heat, Heating, Cooling, Customer Focused Heating, A/C, Air Conditioning, Ventilation, Gas Burners, Oil Burners, Repairs A/C, Repairs Burners, Maintenance A/C, Maintenance Burners, Maintenance, Fix, York Products, Mitsubishi Products, Ductless Splits, Refrigeration, Cooling Systems, Repairs Refrigeration, Walk-In Cooling Systems
Ask for details

Contact information

79 School St, West Dennis, MA 02670

http://www.mcdonnellmechanical.com

Service hours

Monday:
7:00 AM - 4:00 PM
Tuesday:
7:00 AM - 4:00 PM
Wednesday:
7:00 AM - 4:00 PM
Thursday:
7:00 AM - 4:00 PM
Friday:
7:00 AM - 4:00 PM