
Heating & Cooling Repairs, Service, New Installations, Electrical Repairs, Wiring, Surge Protection, Generators, Lighting, Air Conditioners, Furnaces, Heat Pumps, Air Handlers , and 2 more
"Due to allergies that have been progressively getting worse my doctor prescribed singulair early this past summer. Unbeknownst to me, a big part of the problem was the air quality in my own home. I happened to need help with my pilot light last week and realized that I was breathing in some nasty stuff due to the condition of my still running circa 1978 heater. Needless to say I made the decision my health was worth the investment of a new HVAC system (and I wanted EVERYTHING replaced). I now have a MERV 11 filter, UV light and new duct work, everything. The unit is up and running and no runny nose or headache. I am soooo glad I made this decision. Their price was VERY competitive, they were very professional, and all in all it was a much better experience than I expected. Thank you Allgood!! If I could I would give you 6 stars."
Sandy M. in November 2017

Appliance Repair, HVAC
"I woke up to a freezing cold house and was able to book an appointment for a repair that same afternoon. Rashad had the issue with my furnace resolved within 30 minutes. He was friendly and professional and took time to explain the problem to me and to show me exactly what steps he took to fix it. I will definitely call him again if I have any more issues with my heating and ac!"
Kaitlyn B. in December 2020

General service, ac repair, and new installations or replacements, Home air conditioning & heating maintenance and tune-ups, Furnace or Heat Pump Installation, repair, or emergency service , and 1 more
"Orlando was great! Very personable and professional. He got to work promptly and made the necessary repairs and performed maintenance on our HVAC system. I would definitely recommend him and Allgood to anyone who needs HVAC work done."
F96B28548CDE7A2C7C81AEB6C20508487197143A4C17A097D3766BC7A9F56ED3 E. in May 2025

HVAC Installation, HVAC Repairs, Plumbing , and 7 more
"I was struggling with a vendor who installed a new AC and furnace 3 years ago that required service every year. The Guardian team was able resolve the issue in 2 days at a fraction of the cost the original installer quoted. Technician Josh Bennett was able to isolate the problem in 30 minutes. He is very knowledgeable, personable, and very professional. HVAC Service Expert Dave Dover arrived the next day to complete the required repairs and washed the outdoor system. My wife and I could not be happier with Guardian service. We joined their Shield Protection Plan Membership."
Argentris T. in July 2024

HVAC, Electrical
"I highly recommend this business. The technician, Pierer, and his colleague were true professionals and incredibly courteous. Even though I was their last appointment of the night, they went above and beyond to source a replacement part that wasn't stocked on their truck. I truly appreciate their dedication to getting our HVAC unit running late in the evening. Thanks to them, my family was able to sleep comfortably with the heat restored."
19FD926E53A0B60B99BBE444B17653B55E3033CCD5FBA8F350A4BA0FD105335B 1. in December 2025

Indoor & Outdoor Lighting, Electrical Panels install and replacement, Electrical Rewiring- any Electrical Repairs and Installations in both Commercial and Residential settings , and 2 more
"Last year (2021), I hired Casteel to upgrade my HVAC system, tankless water heater, update the pipes in my basement, install a pump for washing machine and bring my electricity. I have a brink home the was built in 1955 and had not had any major repairs since 1985. Everyone I spoke to during the process of consulting and repair was professional, kind and courteous. They always kept an open line of communication and were willing to adjust their schedule according to emergency circumstances that happened in my family. From the products they used to the quality of the workmanship, I am still very pleased with outcome. They respected not only my time but my property too. I will definitely hire them again. I highly recommend them to anyone in the Atlanta, GA area."
Lillian D. in March 2022

HVAC
"I had been using a different HVAC company for my maintenance and repairs but they could not resolve the problem and seemed more interested in selling me a maintenance plan than actually fixing the problem. Comfort solutions called to confirm the time requested online. Patrick was right on time, listened to the issue and had it figured out in no time. My home is warm on this cold morning. Great job!"
Tab W. in November 2015
Woodstock Heating & Furnace Contractors are rated 4.6 out of 5 based on 1501 reviews of 1501 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
Find out how HomeAdvisor can help your business