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William G Day Company

Heating and Air Conditioning, Plumbing, Energy Efficiency Auditing

About us

William G Day Company is a family owned business dating back to 1997. We are a leading Certified Factory Authorized Dealer of Carrier (CFAD) products in Delaware and work with other manufacturers as well. The Company installs, repairs and maintains all Commercial and Residential HVAC products including air conditioning and heating. WGD Company is also well established in Commercial and Residential Plumbing Installations and Service. There is an on call service for emergency plumbing and HVAC needs.

Business highlights

28 years of trusted experience
Se Habla Español
Family Owned & Operated
Emergency Services Offered

Services we offer

Residential and commercial installation and repair of heating, cooling, plumbing, inspections for fixtures, air conditioning & indoor air quality specialists. Back flow testing, Preventative maintenance, service, installation

Services we don't offer

Duct cleaning

Amenities

Free Estimates
Yes
Warranties
Yes
Emergency Services
Yes


Accepted payment methods

Check
CreditCard
Financing Available
Venmo

Photos of past projects

Reviews

4.926 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
92%
4
8%
3
0%
2
0%
1
0%


Rating CategoryRating out of 5
quality
5.0
value
4.6
professionalism
5.0
responsiveness
4.9
punctuality
5.0
Showing 1-25 of 26 reviews

Joe S.
12/2017
5.0
heating & air conditioning/hvac
  + -1 more
The technician was on time, he properly identified himself and explained what work he would perform. His appearance was neat and he arrived with the necessary tools and testing equipment to perform the maintenance. He performed the work as scheduled and answered my questions as he completed the work. I have been using William G Day for approximately 15 years for all my air conditioning and heating maintenance along with some plumbing work. They installed my current furnace approx 10 years ago and will be installing a new central air compressor when the current unit decides to stop running. They are always on time and very flexible with their scheduling and I have referred them to other friends and relatives Jennifer is their office manager and is always a pleasure to work with!!
Description of Work: Performed planned maintenance on my gas central heating furnace.

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
$125

Deborah W.
08/2017
5.0
heating & air conditioning/hvac
  + -1 more
Rich arrived early (he called to see if I would be available and performed part of service. He found dead mouse & nest in one unit & replaced clawed through wire. Also noted condensated line on other unit did not have proper pitch but was draining ok.
Description of Work: Routine yearly summer maintance on 2 HVAC units

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
$250

Richard R.
02/2017
5.0
heating & air conditioning/hvac
  + -1 more
They replaced the fitting and no more water on floor.
Description of Work: Fixed drain leak on boiler.

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
$250

Jill S.
12/2016
5.0
plumbing
  + -1 more
Chris shows up on time (or whoever else they send) does the job right with efficiency and courtesy. I've been using this company for 5 yrs. with great satisfaction.
Description of Work: Unclogged sink (bathroom) and toilet in my son's bathroom.

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

Response from William G Day Company
Thank you Mrs. [Member Name Removed]. Always a pleasure! -Jenn

larry R.
07/2016
5.0
heating & air conditioning/hvac
  + -1 more
.
Description of Work: A/C not blowing air frozen.

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
$660

DAVID F.
04/2016
5.0
heating & air conditioning/hvac
  + -1 more
Luis arrived on time was personable, thorough and explained problem. Was happy to have me stand over it. Shoulder and ask questions. Finished work quickly.
Description of Work: Repair heat pump.

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
$200

Response from William G Day Company
Thank you so much for your review!

Dale B.
04/2016
5.0
heating & air conditioning/hvac
  + -1 more
.
Description of Work: Found bad t-stat “Zone 1 found bad circulator pump zone 3. Installed T-stat and circulator pump.

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
$808

Megan K.
03/2016
5.0
heating & air conditioning/hvac
  + -1 more
On time, efficient, thoughtful service.
Description of Work: HVAC services. Replaced T – stat and fan center.

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
$550

Response from William G Day Company
Thank you for your review!

Elizabeth B.
03/2016
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: Replaced circulating pump in gas furnace

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
$800

Response from William G Day Company
Thank you for your review!!

Tom M.
01/2016
5.0
heating & air conditioning/hvac
  + -1 more
Showed up on time, very knowledgeable & courteous.
Description of Work: Furnace winter checkup.

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
$125

Response from William G Day Company
Thank you for your review! Have a great New Year!

larry R.
01/2016
5.0
heating & air conditioning/hvac
  + -1 more
Very fair dealing. Serviceman Lou knew just what he was doing and did not misrepresent the problem to elevate the price. I figure I saved $800 in probable unnecessary work when the problem was recognized for what it truly was and corrected-quickly. Thanks to Lou the serviceman, we had our heat restored in mid-January when we really needed it. So far, the furnace runs perfectly. Thank you for a job well done and a fair price.
Description of Work: Fixed furnace that would shut off after 5 minutes.

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
$200

James K.
11/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: After performing the annual gas furnace cleanings, they came back and did an outstanding job replacing our two large pump circulators. It was an all day job and Lou, our technician, was very professional and kept us informed throughout the day on the progress of the project. We were very pleased with William G. Day's service and would again utilize their services.

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
$2,800

Response from William G Day Company
Thank you for your review! Have a great New Year!

Richard R.
10/2015
5.0
heating & air conditioning/hvac
  + -1 more
Always there when promissed. Were held up by gas co. sub getting gas line and meter set. All is great.
Description of Work: Replaced oil boiler and HVAC unit with condsor with new gas units also brand new HHW lines to second floor bathroom.

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
$20,000

ada N.
09/2015
4.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: fixed ac unit

Rating CategoryRating out of 5
quality
4.0
value
3.0
responsiveness
3.0
punctuality
4.0

Yes, I recommend this pro
$850

Tim G.
02/2015
5.0
heating & air conditioning/hvac
  + -1 more
Very professional, timely, clean, neat.
Description of Work: Installation of a ductless mitsubishi heat/cool unit.

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
$4,400

Pasu S.
01/2015
5.0
heating & air conditioning/hvac
  + -1 more
Tech on time. Pleasant to talk to. Nice job done with reasonable price.
Description of Work: HVAC planned maintenance.

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
$190

Response from William G Day Company
Thank you so much for the awesome review!! It means a lot to us!!

Chris & Lillian C.
10/2014
5.0
heating & air conditioning/hvac
  + -1 more
They were on time and very professional. I am using them again.
Description of Work: I purchased a Big Deal for Gas Furnace Tune-Up Special.

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
$99

Response from William G Day Company
Thank you so much for the review!! It really does mean a lot to us!!

Stephanie T.
10/2014
5.0
heating & air conditioning/hvac
  + -1 more
Purchased deal on Angie's List. Received prompt communication from William G. Day re: scheduling the service, and they knew I had purchased the same service last year. Scheduling was easy. Technician arrived on time and performed service. Would purchase the deal again, and would use William G. Day for HVAC needs in the future.
Description of Work: Furnace tune up

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
$125

Response from William G Day Company
Thank you so much for the review!! It means a lot to us!!

Pasu S.
01/2014
5.0
heating & air conditioning/hvac
  + -1 more
Heating would not come on due to igniter problem. Provider responded quickly and resolved the issue on time. Very reliable. We will be asking them to perform the Planned Maintenance for our Gas Heat/1-AC unit.
Description of Work: I used William G Day Co.

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
$322

Stephanie T.
11/2013
5.0
heating & air conditioning/hvac
  + -1 more
Purchased a furnace tune-up deal through Ange's List. I was contacted promptly by William G. Day and the service was scheduled a few days later. The technician was prompt, pleasant, explained what he was doing, and answered some questions I had about the HVAC system in our house. Very positive experience overall.
Description of Work: I used William G Day Co.

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
$99

Christopher E.
12/2012
4.0
heating & air conditioning/hvac, plumbing
  + 0 more
Overall, it was fine. They were hired as the subcontractor under our GC for this work due to a large extent to the conversations we had had with Bill Day regarding options, including geothermal, high efficiency, and more traditional systems. Bill's experience and knowledge was evident, and it was immediately apparent that we could work with him, and by extension, his company on this project. With this type of work, the choice between combinations of fast and sloppy or slow and high quality is an easy one. Bill's crews were slower than anticipated, but to be fair, this is largely based on the opinion of our GC, with whom I would never work again. We also asked them to do things not typical designed into a house, so custom work was required which slowed down the process. Referencing our GC - by the end of the project roles had been reversed, and my wife and I ended up doing a significant amount of that work in addition to much of the physical labor. Despite the change in the contractual roles and responsibilities, WGD continued their professional manner in dealing with us and finishing up a complicated project for the agreed upon price. I would use this organization again.
Description of Work: William G Day company designed and installed all the HVAC and plumbing for the house my wife and I built.

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

Yes, I recommend this pro
$45,000

Edith R.
10/2012
5.0
heating & air conditioning/hvac
  + -1 more
They are profession and on time. They are very clean. I really felt like they respected our house. Our house is older and they were able to deal with all its uniqueness.
Description of Work: They installed the central air conditioning for us and service it each year.

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

Aniko C.
07/2012
5.0
heating & air conditioning/hvac, energy audit
  + 0 more
I was very pleased with their services. Their price was reasonable and their professionalism was great. I will definitely use them in the future.
Description of Work: They did an overall check on all my electrical things in my home including my heating system, air conditioning unit, filters, furnace, etc.

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
$199

sheila K.
08/2008
5.0
plumbing
  + -1 more
It was a job that someone else had started and didn't finish. They came out quickly and did the work. We were happy to find them.
Description of Work: They did plumbing in an older house. They hooked up washer lines.

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

DONNA S.
11/2006
5.0
heating & air conditioning/hvac
  + -1 more
We needed to replace our 30-year old systems, so we got three estimates. This company impressed us the most. They were friendly but very professional. They arrived promptly, for the estimate and for all the subsequent work. They placed tarps on our floors to walk on, and cleaned up after themselves each day. They installed a Carrier Infinity system for us. The inspector said it was a very good installation. I've had to phone them a couple of times for minor things since the installation, and they responded immediately and fixed the problems (which were minor).
Description of Work: Installation of new gas furnace and a/c, including new chimney liner and humidifier.

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
$9,800
    • 1(current)
    • 2

Contact information

330 Water St Suite 109, Wilmington, DE 19804

https://williamgdayco.com

Service hours

Sunday:
Closed
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
Saturday:
Closed

Licensing

Bonded

Insured

Licensed*

Trade License Number
PL-0002677
Trade License Locale
Delaware
Trade License Expiration
10/31/2024
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,
Plumbing,
Energy Efficiency Auditing

FAQ

William G Day Company is currently rated 4.9 overall out of 5.

Sunday: Closed

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

Saturday: Closed

William G Day Company accepts the following forms of payment: Check,CreditCard,Financing Available,Venmo
Yes, William G Day Company offers free project estimates.
No, William G Day Company does not offer eco-friendly accreditations.
No, William G Day Company does not offer a senior discount.
Yes, William G Day Company offers emergency services.
Yes, William G Day Company offers warranties.
William G Day Company offers the following services: Residential and commercial installation and repair of heating, cooling, plumbing, inspections for fixtures, air conditioning & indoor air quality specialists. Back flow testing, Preventative maintenance, service, installation
Duct cleaning

Contact information

330 Water St Suite 109, Wilmington, DE 19804

https://williamgdayco.com

Service hours

Sunday:
Closed
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
Saturday:
Closed