24/7 Heating & Cooling Company in Southern NH

Proudly serving Plaistow NH, Salem, Atkinson, Newton, Windham, Derry, Hampstead, Londonderry & neighboring towns with trusted heating and cooling services.

24/7 Heating & Cooling Company in Southern NH

Proudly serving Southern NH, including Salem, Atkinson, Plaistow, Newton, Windham, Derry, Hampstead & Londonderry with trusted heating and cooling service.

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Experienced Technicians

Some Of Our Projects

While we generally stick to a 25-mile radius of our home base in Plaistow, NH, don’t let that stop you from reaching out – depending on your location, the job or our schedule, we’ll do our best to make it out!

Roth Double Wall Oil Tank Installation - Pelham NH

Boiler Installation - Salem NH

Boiler Installation - Methuen MA

Heating & Cooling System Installation - Salem NH

Boiler Installation - Hampstead NH

Mitsubishi Single Zone Mini Split Installation - Atkinson NH

Al has been GREAT! He gives fair prices and does great work. I will be calling him with any oil related issues in the future and would highly recommend him.

Gioia Customer

We woke up without heat this morning on this bitter cold day. We called and he came out this afternoon, fixed the problem and we are now toasty warm! Thank you for your prompt, excellent service!

Amy Customer

Did a great job on installing a new oil tank. Honest, fair price, good work ethic, arrived on time, cleaned up the work area when job was completed. Highly recommend.

Sandra Customer

Reviews from Customers

At Big Al’s Services, customer satisfaction is our top priority, and it shows in our 5-star reviews across the board. From expert installations to fast, reliable repairs, our clients trust us for our quality workmanship and exceptional service.

Expert Cooling & Heating Installation, Maintenance & Repair

Expert installation of split AC and heating systems for optimal year-round comfort and energy efficiency.

Safe and efficient removal of old boilers and oil tanks to make way for upgraded systems and prevent potential hazards.

Professional furnace installation to ensure your home stays warm and your energy bills stay low.

Full-service central air installation and maintenance to to keep your system running efficiently.

Precise installation of oil tanks, ensuring safe, long-term performance and compliance with local regulations.

Comprehensive Heating & Cooling units maintenance and cleaning services to extend system life.

Installation of high-efficiency boilers for reliable, cost-effective home heating.

Sometimes problems with your heating or cooling systems may arise out of nowhere and at the worst time, WE ARE READY 24/7!

Are you a Veteran?

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24 Hour Emergency Service

(603)-453-0533

Our Commitment to Superior Heating and Cooling Service

At Big Al’s Services, we provide top-tier heating and cooling solutions, serving homes in Southern NH, and the surrounding areas. From boiler installation to 24/7 HVAC repair, we’ve got your comfort covered. Whether you need emergency furnace repair or are upgrading to a central air conditioning system, our certified technicians deliver fast, reliable, and affordable services.

1,200+ Homeowners in Your Area Trust Big Al. Book Your Service Today!

When it comes to getting the job done right, your neighbors know who to call. Big Al is known for dependable service, honest pricing, and exceptional results. See the difference for yourself—book your service today and get started hassle-free.

Our Commitment to Superior Service

At Big Al’s Services, we provide top-tier heating and cooling solutions, serving homes and businesses in Salem, NH, and the surrounding areas. From boiler installation to HVAC repair, we’ve got your comfort covered. Whether you need emergency furnace repair or are upgrading to a central air conditioning system, our certified technicians deliver fast, reliable, and affordable services.

Mitsubishi and Energy Kinetics Heating & Cooling: Expertly Installed

At Big Al’s Services, we are proud to be a preferred contractor for Energy Kinetics boilers, a top choice for homeowners seeking energy-efficient heating solutions. Energy Kinetics boilers are renowned for their ability to cut fuel costs by up to 40%, operate whisper-quiet, and provide virtually endless hot water. Made in the USA with a proven track record of reliability, these boilers are designed for easy servicing and long-term performance. As a trusted partner, we ensure expert installation and maintenance, helping you achieve maximum comfort and savings throughout the cold months.

As a Mitsubishi Diamond Dealer, Big Al’s Services provides unmatched expertise in the installation and maintenance of Mitsubishi Electric heating and cooling systems. This elite designation signifies that our team has met Mitsubishi’s highest standards for training, customer satisfaction, and technical skill. By choosing a Mitsubishi Diamond Contractor for your HVAC installation, you gain access to industry-leading products, extended warranties, and energy-efficient solutions, ensuring long-term comfort and reliability for your home. Trust Big Al’s to deliver superior results for your heating and cooling system needs.

24/7 Emergency Service