Recent Blog Posts

air conditioning
May 29, 2026
From leaky lines to broken capacitors, learn why your air conditioning might be acting up and how to handle these common cooling system failures.

HVAC Contractors

Watertown, MA

1-Year Installation Warranty

One-Year Workmanship and Up to 10-Year Parts Warranty on Qualified Equipment

Licensed and Insured

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Trusted Heating & Cooling Solutions Since 1961

B & G Heating and Air Conditioning has provided reliable HVAC services to Watertown and surrounding communities for over six decades. Founded in 1961 as a family-owned business, we've built our reputation on consistent quality, honest pricing, and realistic timing estimates for all projects. We offer licensed and insured HVAC contractors Watertown, MA homeowners count on to give each job the attention it deserves, from routine maintenance to urgent repairs. We focus on keeping your indoor temperatures comfortable year-round, with technicians thoroughly trained on various systems, including those from Carrier, Mitsubishi, and AprilAire.

Our personalized customer care sets us apart in the industry. When you contact B & G Heating and Air Conditioning among HVAC contractors in Watertown, MA or the surrounding areas, you'll connect directly with a knowledgeable team member ready to address your concerns and schedule appropriate service. Our custom fabrication shop creates tailored solutions for unique heating and cooling challenges that standard products cannot address. Homeowners and businesses needing immediate help can access our emergency services for urgent heating and cooling issues. We offer free estimates for all projects, ensuring you understand the full scope and cost before work begins. Contact us!

Why Choose Our HVAC Contractors in Watertown, MA?

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Talk to a Real Person

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Honest Timing

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Honest Pricing

B & G Heating and Air Conditioning
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Custom Fabrication

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Fair Market Value

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Licensed and Insured

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AC Services

Our complete air conditioning services maintain comfort in homes and businesses during summer months. From new system installations and replacements to repairs and maintenance, we handle all AC unit types and brands.
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Emergency Heating & Air Repair

System failures happen at all hours. Our emergency team provides quick response when heating or cooling systems break down unexpectedly, offering same-day service to restore comfort to your property.
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Heating Services

Our technicians provide dependable solutions for all heating needs, from furnace installations and boiler replacements to system repairs. We service various heating systems while maximizing efficiency throughout the cold Massachusetts winters.
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High-Efficiency HVAC

Modern energy-efficient systems cut consumption while delivering superior comfort. Our team helps you select and install HVAC solutions that lower utility bills and environmental impact without compromising performance.
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Seasonal HVAC Maintenance

Regular upkeep extends system life and prevents breakdowns. Our seasonal tune-ups ensure your equipment runs at peak efficiency year-round, catching potential issues early.
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Specialty HVAC Services

Our custom fabrication capabilities solve unique HVAC challenges. When you choose us among HVAC contractors in Watertown, MA or the nearby areas, we'll design specialized solutions for historic buildings, complex renovations, and properties with unusual layouts requiring creative approaches.

Our Recent Projects

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Here's what our satisfied customers are saying...

At B & G Heating and Air Conditioning, we take pride in providing exceptional HVAC to our customers. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of B & G Heating and Air Conditioning and let others know what you think.

Frequently Asked Questions

Homeowners and business owners often have questions about heating, cooling, and overall system performance, especially when comfort and energy efficiency are on the line. This FAQ section is designed to give clear, practical answers to the most common concerns we hear every day. Whether you are dealing with inconsistent temperatures, rising utility bills, or a system that is not performing the way it should, understanding your HVAC system is the first step toward making informed decisions.

  • What HVAC services do you offer?

    We provide a full range of heating and cooling services designed to keep systems operating efficiently in all seasons. This includes air conditioning repair, furnace repair, HVAC system inspections, seasonal maintenance, and installation of high-efficiency equipment. We also work with ductless mini-split systems, which are ideal for zoned comfort and energy-conscious upgrades in both residential and light commercial properties.


    Our service approach focuses on diagnosing issues quickly and recommending solutions that prioritize long-term reliability. Whether a system is struggling to maintain temperature consistency or has completely stopped working, we assess both immediate concerns and underlying causes. Many customers looking for HVAC contractors in Watertown, MA or the surrounding communities are surprised to learn how many performance issues stem from neglected maintenance rather than major component failure.


    We also handle preventative care, which includes filter checks, airflow testing, thermostat calibration, and system cleaning. These services are essential for maintaining efficiency and extending equipment lifespan. A properly serviced HVAC system runs more smoothly, consumes less energy, and is far less likely to experience unexpected breakdowns during peak usage seasons.

  • What qualifies as an HVAC emergency?

    An HVAC emergency typically involves situations where heating or cooling failure creates unsafe or uncomfortable indoor conditions. This includes complete system shutdowns, no heat during freezing temperatures, or air conditioning failure during extreme heat waves. Other urgent issues can include burning smells, electrical problems, or unusual noises that suggest mechanical failure.


    In these situations, quick action is important to prevent further system damage or potential safety risks. Homeowners often turn to us among HVAC contractors in Watertown, MA and the nearby areas when facing sudden breakdowns because fast diagnosis and repair can restore comfort and prevent additional complications. Ignoring emergency symptoms can lead to more extensive damage, higher repair costs, and longer downtime.

  • How fast is your emergency response?

    Emergency HVAC response times are designed to prioritize urgent situations as quickly as possible, especially during extreme weather conditions. Our dispatch process focuses on getting a qualified technician to your location promptly so that issues can be assessed and stabilized. In many cases, same-day or next-available emergency service is provided, depending on call volume and severity.


    When people search for dependable HVAC contractors in Watertown, MA and beyond, rapid response is often one of the most important factors in their decision. A fast arrival time can make a significant difference in restoring comfort, especially when heating systems fail in winter or cooling systems stop working during heat waves. Quick intervention also helps prevent further wear on system components.

  • What should I do before the technician arrives?

    Before a technician arrives, there are a few simple steps you can take to help protect your HVAC system and ensure a smooth service visit. First, check your thermostat settings to confirm the system is set correctly, and batteries are functioning if applicable. It is also helpful to check circuit breakers to ensure the system has power.


    If you're experiencing unusual smells or sounds, turn the system off to prevent potential damage until a professional arrives. You should avoid further system use once a serious issue is detected, as continued operation can sometimes worsen the problem. Keeping the area around your HVAC unit clear can also help technicians work more efficiently.

  • Why is seasonal HVAC maintenance important?

    Seasonal HVAC maintenance plays a major role in keeping systems efficient, reliable, and long-lasting. During maintenance visits, key components are inspected, cleaned, and tested to ensure proper operation before peak heating or cooling seasons begin. This proactive approach helps reduce unexpected breakdowns and improve overall system performance.


    Regular maintenance also supports energy efficiency by ensuring that airflow is unobstructed, filters are clean, and mechanical parts are functioning as intended. Systems that receive routine care tend to operate more smoothly and consume less energy over time.


    Beyond efficiency, maintenance helps extend the lifespan of your HVAC system by reducing strain on critical components. Small issues can be identified early before they develop into major repairs. This preventative approach not only protects your investment but also ensures your system is ready to perform when you need it most throughout the year.

Recent Blog Posts

air conditioning
May 29, 2026
From leaky lines to broken capacitors, learn why your air conditioning might be acting up and how to handle these common cooling system failures.