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In Henniker, we are AGS Services, Inc., a reputable force in the realm of HVAC services. Specializing in HVAC and plumbing solutions, our team is …
The Best HVAC Company in Henniker
Compare top-rated hvac providers in Henniker. Profiles include verified reviews, service details, and direct contact options.
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Your One-Stop Hub for HVAC Services Across the US
Whether your air conditioner stopped on the hottest day of the year, your furnace is cycling on and off in January, or you are planning a full system replacement for your home or business — this page is your starting point. GigoPro's HVAC hub gathers verified heating, ventilation, and air conditioning contractors from cities across the United States in one place, so you can stop calling around and start comparing on facts.
Every company you find here lists what it actually does: air conditioning repair and installation, furnaces and heat pumps, ductwork and ventilation, indoor air quality, commercial HVAC maintenance, and emergency call-outs. Each profile shows the services offered, the area the company serves, recent customer reviews with ratings, and contact details — so you can shortlist three or four pros, request written estimates, and book the one that fits you best.
Quality on Gigo is not self-declared. Before any business appears in search results, we moderate the profile: we verify that the company is real, actively operating, and actually operates in the category it claims; for regulated trades, we verify proper credentials. Listings that stop being active are hidden automatically. That is what "verified near you" should mean, and it is why tens of thousands of homeowners [replace with real number if available] start their HVAC search here every month.
Pick your city below to see local providers, ratings, and current availability — or read on to learn about the services, get a simple contractor-hiring checklist, and find out what to expect before you book.
Services You Can Find on Gigo
The contractors in this directory cover every part of that equation, from a quick fix to a full replacement. Here is what each type of service involves, and when you are likely to need it.
Air Conditioning Repair & Installation
Central AC repair covers everything from a tripped breaker and a refrigerant leak to a failing compressor or a blower motor that needs replacing. If your system is older than 12–15 years [verify & localize], or repairs keep adding up, a new installation — including ducted central systems and ductless mini-splits — can be the smarter long-term call. Companies listed here service AC units of every age and brand, so a technician visit starts with a proper diagnosis, not a sales pitch.
Heating & Furnace Services
Furnaces, boilers, and space heaters keep your home livable through winter. Typical jobs: no-heat emergencies, noisy operation, pilot and ignition problems, carbon-monoxide safety checks, and full furnace replacement. Annual pre-winter maintenance is the cheapest insurance you can buy against a breakdown in freezing weather. If your heat stops working, prioritize companies that list emergency or same-day response in their profile.
Heat Pumps
Heat pumps heat and cool from the same efficient unit — air-source systems are the most common, with ground-source (geothermal) options for larger projects. Contractors in this category install, repair, and replace heat pumps, size them correctly for your home, and handle the ductwork modifications that a switch from a furnace often requires. If you are replacing an aging system, a heat pump conversion is worth having with two or three licensed pros before you decide.
Ductwork & Ventilation
Your ducts carry every degree of comfort to every room. Duct cleaning removes dust and debris that builds up over years; duct sealing stops the leaks that let conditioned air escape into attics and crawl spaces; and duct repair or replacement fixes crushed, disconnected, or rodent-damaged runs. If rooms in your house never quite reach the set temperature, airflow problems are often the culprit — worth checking before you blame the system itself.
Indoor Air Quality
Modern HVAC work goes beyond temperature. Air purifiers, whole-home filtration, humidifiers and dehumidifiers, ventilation and fresh-air systems, and UV treatments all change what you breathe. Companies offering indoor air quality services can test and improve air in homes with allergies, asthma, new paint or renovation dust, or simply poor circulation.
Commercial & Multi-Unit HVAC
Offices, restaurants, retail spaces, and apartment buildings have very different needs than homes — rooftop units, package systems, and scheduled maintenance contracts that keep tenants comfortable and equipment warranties valid. The directory includes commercial HVAC contractors who can respond quickly when a business space loses heat or cooling, and who will quote preventative maintenance to avoid the midnight call-out later.
Maintenance & Seasonal Tune-Ups
A spring tune-up before cooling season and a fall check-up before heating season catch small problems while they are still cheap to fix. Maintenance typically covers filter replacement, cleaning coils and burners, checking refrigerant charge, testing safety controls, and confirming airflow. Many companies publish maintenance plans in their profiles — compare what is included (and what an emergency visit costs) before you commit.
24/7 Emergency HVAC
Systems break on weekends and holidays. Emergency-ready contractors keep after-hours teams for exactly the no-heat, no-cool, or gas-odor situations that can't wait until Monday. Check a company's profile for stated emergency availability and response policy before needing it — that is far easier than cold-calling on a Christmas morning.
Verified HVAC in Henniker, NH
We show only active businesses that pass moderation. Results are specific to Henniker and nearby service areas, and inactive profiles are removed to keep the list current.
Real reviews for hvac
Ratings and reviews come from customers who used the service. Compare hvac pros in Henniker by experience, responsiveness, and value before you reach out.
Local-first search in Henniker
Filter by neighborhood, check locations on the map, and find providers close to home or work in Henniker. Listings are refreshed regularly — August 2026.
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Frequently asked questions
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Is GigoPro free to use?
Yes. Browsing businesses, reading reviews, and comparing providers is free for everyone. Business owners can create a basic listing at no cost.
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How do you verify businesses?
Every profile goes through moderation before it appears in search. We check that the business is real, active, and matches the category it claims. Inactive listings are hidden automatically.
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How do I choose the right pro?
Start with ratings and recent reviews, then compare services offered, location, and response time. Contact two or three providers to get quotes before making a decision.
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Can I list my business on GigoPro?
Yes. Create a free business profile to reach local customers searching for your category. You can update services, photos, and contact details anytime.
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How often is information updated?
Business owners update their own profiles. Our team also refreshes hub pages and removes inactive listings so search results stay current.
Customer reviews in Henniker
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Saturday night call for gas leak at home. Technician arrived quickly, repaired the leak, and was friendly and knowledgeable. Also advised me on how to repair a broken circulator pump. Very professional.
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Thinking of having AGS do work in your home? Let me review the plumbing/HVAC work they did in our new house in 2005: 1. They installed two older Lennox A/C systems that used R-22, knowing it would be banned within the next few years. The Lennox rep thought they were older systems they had lying around their warehouse. Owner Ken Jaeger told me not to worry, people in NH don't use A/C very often anyway; 2. They installed a small, inferior well tank and incorrect well pump that needed to be replaced; 3. They installed a Rinnai tankless water heater that was replaced this month that the installer said was older than the time it was originally installed, another warehouse lay-around; 4. They placed the Rinnai at the furthest point away from where the water was needed. Nothing like waiting 10 minutes to take a shower; 5. They incorrectly installed outdoor sillcocks, one which was angled into the basement that later froze and burst, another where they compromised the integrity of a parallam by notching it; 6. They placed the boiler on wood rather than a raised concrete or block pad; 7. They vented the boiler exhaust and intake so close to each other that the PVC pipe started to melt. The foam they used also started to burn. Three contractors told us we were very lucky a major fire didn't break out in the cavity. All this was done to maximize their profit margin and/or because they didn't know what they were doing.You had better watch them closely, ask lots of questions, and check out the equipment they sell you - that's if you want to take a chance.
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My wife & I want to extend our sincere appreciation for the exemplary work done by Craig & Ben during installation of our replacement gas boiler (Weil McLain GV90+4). Their attention to detail in installation, helpful manner and willingness to work far beyond what was probably anticipated, with no comment or complaint (to us) was amazing. They both represent the best in your business - professional services. You can be assured, given the question or opportunity, we won't hesitate to recommend AGS Services. Bruce & Judy Healey, Newbury, NH
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I had a lot of unanswered questions about the different options from another local company. Ken made all crystal clear and set us up with a great dual speed American Standard furnace. Will surely go back for more expert help. 👍
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I had my failing hot water tank replaced by an On demand water heater by Rinnai. AGS was responsive to my needs, came and gave me a quote and quickly did the job. Jason M. did a high quality awesome job I highly recommend AGS Andre C. Thanks
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We own a cabin in Antrim. AGS has been instrumental in keeping that cabin working. They have helped in is many way related to seasonal opening and closing, offered great advice, and helped us with systems aside from HVAC. The office answers the phone (a miracle today), and the Techs, usually Jason, are all highly skilled, and very upbeat. When I told Jason about a looming issue by cell phone, he said, "I'm on my way and I'm gonna make it work. Don't worry." Over many visits AGS has ALWAYS been on time, and the tech calls when he is on the way. Without exception, the price is always fair and well worth every penny.
