Hefferon Heating & Cooling

Business Details

Emergency

services

Trusted HVAC Installation & Repair in Danbury, CT

Hefferon Heating & Cooling has served residential and commercial clients in Fairfield County, Connecticut, for decades, delivering expert HVAC solutions tailored to individual needs. Our team of certified technicians specializes in installation, repair, and maintenance of heating and cooling systems, prioritizing customer satisfaction through transparent communication and reliable service. We exclusively offer Trane products, renowned for durability and energy efficiency, ensuring long-term value for our clients.

With 24-hour emergency availability and preventative maintenance plans, we address both urgent needs and long-term system performance. Our reputation is built on over 20 years of consistent service excellence, as evidenced by numerous client testimonials praising our professionalism, technical expertise, and commitment to resolving comfort challenges efficiently.

Services

HVAC Installation Emergency Repairs Preventative Maintenance Ductless Systems Indoor Air Quality Furnace Services Heat Pump Solutions Thermostat Upgrades Commercial HVAC System Replacements

Highlights and features

We offer 20+ years of localized HVAC expertise in Fairfield County.
Our team uses only Trane equipment with proven reliability and efficiency.
24-hour emergency service available for urgent heating/cooling needs.
Preventative maintenance plans extend equipment lifespan and efficiency.
Owner-led operations ensure personalized attention to every project.

What people say

Polite and professional Thorough and responsive Terrific job Explain processes clearly Fair pricing

Website

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Services

HVAC Installation

We install residential and commercial heating, ventilation, and air conditioning systems using Trane equipment. Our process includes load calculations, system design, and proper sizing to ensure optimal efficiency. Clients receive personalized recommendations based on home size, insulation levels, and climate requirements.

Emergency Repairs

Our 24-hour emergency repair team addresses urgent HVAC failures with rapid response times. Technicians carry common replacement parts and use diagnostic tools to resolve issues like furnace failures or AC breakdowns during extreme weather conditions.

Ductless Systems

We design and install ductless HVAC systems for homes without existing ductwork. These zoned solutions allow temperature control in specific rooms using wall-mounted or ceiling cassette units connected to outdoor compressors.

Preventative Maintenance

Our maintenance plans include bi-annual inspections, filter replacements, and system adjustments. Regular servicing improves energy efficiency, extends equipment lifespan, and helps prevent unexpected breakdowns during peak usage periods.

Indoor Air Quality

We install air filtration systems, humidifiers, and ventilation solutions to improve indoor air quality. Services address allergens, moisture control, and ventilation requirements for healthier living environments in both residential and commercial spaces.

People

Ernest Hefferon

Founder and Owner

Ernie Hefferon leads with 20+ years of HVAC experience, focusing on customer education and system optimization. He personally oversees complex installations and maintains direct client communication.

Brenda Hefferon

Office Administrator

Brenda manages office operations with 15+ years of experience, ensuring smooth scheduling and client coordination. She serves as primary contact for service agreements and maintenance plans.

Andrew Seavey

Service Manager

Andrew directs field operations with expertise in system diagnostics and repair protocols. He trains technicians on new HVAC technologies and ensures service quality standards.

Glenn Owen

Lead Technician

Glenn performs complex installations and repairs with 10+ years of field experience. He specializes in Trane system configurations and energy-efficient upgrades.

Christina Garron

Office Administrator

Christina handles client communications and rebate paperwork processing. With 8 years in HVAC administration, she ensures accurate documentation for equipment warranties and financing.

Questions

What HVAC services do you offer in Danbury?

We provide full-service HVAC solutions including installation, repair, and maintenance for residential and commercial properties with 24-hour emergency availability.

Do you service all HVAC brands?

While we specialize in Trane equipment, our technicians can service and repair all major HVAC brands for both residential and commercial systems.

Are financing options available?

Yes, we offer financing plans to help homeowners invest in new HVAC systems with manageable monthly payments.

What areas do you service?

We serve Danbury and surrounding communities including Brookfield, Ridgefield, New Milford, and all of Fairfield County, Connecticut.

Do you offer maintenance plans?

Yes, our preventative maintenance agreements include bi-annual system checkups with priority service scheduling and repair discounts.

Can you install ductless systems?

Yes, we design and install ductless mini-split systems for homes without existing ductwork, offering zoned temperature control solutions.

Reviews (8)

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Amy Mikolay

Jan 29, 2022 Report

Just had a long awaited house bucket list item installed! Cant wait for our next heat wave! The installation team was super friendly and polite. I am working from home these days and I barely heard them. I thought it was going to be 4 days of dust and banging - I was so wrong. Quiet and Clean!
Looking forward to many years of being a Hefferon customer.

Tiffany Schwarz

Aug 21, 2021 Report

Hefferon Heating and Cooling LLC has always been professional from start to finish. And even when finished with what they were needed to work on, they continue to maintain a relationship. When you work with Ernie and his team, you quickly realize that you are not just a customer for that moment, but you have found a place where you can confidently be a customer for life. It is a relief and pleasure to know when you need something that they will be there for you; they will know who you are, and they will have the answers you need in an expedient time frame.

Truly a wonderful company with a dedicated owner and employees. In todays world, it is refreshing to come across people who take pride in their trade and quality of work and when they leave your home, they leave it spotless. True quality.

Allison Clear Fastow

Aug 20, 2021 Report

They came out within two days, identified the problem and had it fixed within an hour. Highly recommend!

Meghan Witte

Jul 23, 2021 Report

Ernie and his team put in a new furnace late fall for me. They were professional and very fair priced. I needed someone to come out to my parents for their AC recently. The young gentleman came out fixed our issue quickly and professionally. They explained how to prevent the issue in the future. I dont write reviews often but I highly recommend Ernie and his team. Thank you for being a good, honest, respectable company.

Dianne Goodwin

Jul 14, 2021 Report

Prompt, professional and knowledgeable. Both men were friendly and answered my questions. They cleaned up the area before they left. You can ask for better than that.

Joyce R. Cole

Jun 17, 2021 Report

Considering how busy this business is at this time of year, they responded to my issues immediately and did a great job. I appreciate the response and the professional courtesy I was given. A very knowledgeable tech GOOD JOB

Roy Van Steinburgh

Feb 11, 2021 Report

We came home to a house with no heat, so we called Heffrrons. They arrived in less than an hour and repaired the furnace. So professional!

Chris Medici

Jan 21, 2021 Report

I am a contractor in westchester NY. I moved to Connecticut and decided to give Hefferons a try for installing central A/C in my home. Ernie is great , knowledgeable and easy to deal with. The workers are super professional and take real pride in their work. Total great experience all around. I will be recommending them to anyone else as well as getting them to bid on future projects for my company.