No Gimmick, No Hassle, Value Based PricingCall 603-782-9552

Time to Get Ready for Winter!

From furnace & boiler service and maintenance to complete heating system replacements, we have you covered. Experience a no gimmick, no-hassle, value based pricing transaction like no other.


Installation& Service

When it comes to service, repair and replacement for oil and gas furnaces and boilers, you can count on the professionals at Sin Cal Heating and Cooling to deliver in both level of service, and total overall value.

Air Conditioning

Installation& Service

Whether you need maintenance, service, repair, replacement or installation of a central AC unit, Whole house AC unit, or convenient mini-ductless splits, we have the best overall value around so you can keep your cool!



We are here when you need us most, call for prompt dispatch during true emergencies!

Call Sin Cal Heating and Cooling for Furnace, Boiler and AC, Including Mini-Ductless Split and Central Air Conditioning Repair, Service and Installation

HVAC contractors serving New Hampshire, and locally near you with quick response in the Keene, Peterborough, Concord, Manchester, Salem, Nashua, Rochester and Dover NH areas

In NH, count on us to help you solve your furnace, boiler, central AC, or ductless mini-split air conditioning challenges, from service and repair, to sales and installations, Sin Cal Heating and Cooling offers a no gimmick, no hassle, value based pricing engagement unrivaled anywhere in the industry.

Don’t fall for those single line item bids, or a vendor that offers a one price covers all approach, it’s not in your best interest. Understanding what you are getting specifically, line item by line item is by far the best way to ensure you are getting the best value possible. Many HVAC companies in New Hampshire, in fact HVAC companies across the country rely on uneducated clients to increase margins, and inflate invoices. Many of the large associations in the HVAC industry have recommended to it’s members the utilization of a pricing model that has long plagued the auto industry, and one we are sure you will be familiar with, flat rate pricing with minimal breakdown of project costs. This shouldn’t make you feel like your paying your over-inflated car repair bill. This flat rate pricing buries the true cost of materials and labor so you have no idea what you are paying for. No way to compare, and no way to ensure you are getting a “fair” deal. Our commitment to all of our clients is to offer no gimmicks, no hassles, and value based pricing. A win-win for everyone!

Call today and see the difference in your heating and cooling repair and replacement costs! 603-782-9552

No Gimmicks & No-Hassles

Sin Cal Heating and Cooling offers gimmick and hassle free, value based pricing with unrivaled customer service. No hidden costs, no flat rate over pricing, and absolutely no overselling.

Financing Available

Failures can happen at the most inopportune times, with financing available you can minimize the financial disruption to your family or business

1 Year Workmanship Guarantee

Sin Cal Heating and Cooling offers one of the industries best, no-nonsense workmanship warranties

“Professionalism, Punctuality, Quality, Responsiveness, Value

Both the office staff and the guys on the job site were exceptionally friendly and competent. I wouldn’t hesitate to recommend them to anyone. I wish all contractors I’ve worked with were like them.


Call Now for 24-Hour Emergency Service

We are here when you need us most, call for prompt dispatch during true emergencies!

Furnace Installation and Service

We repair, service, and install natural gas, propane, and oil-fired furnaces from all makes and manufacturers.

“I certainly recommend Sin Cal. I have been a customer since they opened shop in Hillsboro 4 years ago. I have seen them grow in their profession and everyone that has come out was very friendly, professional and thorough.”


Boiler Installation and Service

We service and install gas and oil boilers from Lochinvar, Weil-Mclain, Burnham, Rinnai, Peerless, Bosch, Navien and more.

“Kyle and Heidi went above and beyond to insure everything was exactly the way we wanted. They showed excellent workmanship and upon completion the house was cleaned up beautifully!”


Duct Work Installation and Service

We repair, replace, and install heating and cooling system ductwork leading to maximum efficiencies, lower heating and cooling costs, and creating a healthier living and working environment.

“Excellent customer service! Heidi was quick to respond and answer all of our (many!) questions. The installation went smoothly, the crew was professional and mindful of my home. We would certainly hire Sin Cal again!"


Mini Ductless AC Installation and Service

Mini-Ductless split AC has become popular over the last few years here in New England, we can help you with maintenance, service, repair and installation for many of the world’s leading brands like American Standard, Mitsubishi, Lennox, Fujitsu, LG and Daikin.

“Kyle was friendly, personable and excellent at his job. Great job!”


Central AC Installation and Service

If you are looking for service and repair, or replacement and installation of your central AC whole house air conditioning system let us help. Servicing American Standard, York, Goodman, Lennox, Amana and more.