O'Brien Heating & A/C - New Durham's Best HVAC Services

New Durham, NH 03855

(603) 726-6412

About the Company

O'Brien Heating & A/C is your trusted, local expert for heating, cooling, and fireplace services in New Durham, NH. We understand the specific challenges homeowners face in our climate, such as furnaces short cycling due to incorrect sizing or airflow issues and clogged condensate drains causing system shutdowns. Our team provides precise diagnostics and reliable repairs to tackle these common problems, ensuring your system runs efficiently and reliably. Beyond HVAC, we specialize in comprehensive fireplace and fire heating system services—from installation and repair of wood stoves and inserts to professional cleaning and conversions—helping you stay warm and safe all winter long. We're committed to prompt, honest service for our New Durham neighbors.

Property Service Solutions

  • Fireplace insert installation
  • Fireplace repair
  • Fireplace installation
  • Fire heating system inspection
  • Fire heating system conversion

Q&A

Can a fireplace insert installation help if my furnace is short cycling in New Durham?

Absolutely. A high-efficiency fireplace insert can serve as an effective supplemental heat source for the main living areas of your New Durham home. This reduces the constant demand on your central furnace, which is a common cause of short cycling. We can assess your home's layout and heating needs to recommend an insert that improves comfort and takes the strain off your HVAC system.

How does regular fireplace cleaning prevent HVAC issues in my home?

Professional fireplace and chimney cleaning is crucial for safety and can impact your home's air quality and HVAC efficiency. A clean fireplace ensures proper draft, which prevents smoke and combustion byproducts from backing into your home. This means your furnace or air handler isn't working overtime to filter out particulates, helping to prevent airflow-related issues like short cycling and keeping your entire system running smoother.

My furnace's condensate drain keeps clogging. Could my fireplace or wood stove be a factor?

While not a direct cause, improper fireplace use can contribute to overall indoor air dryness in winter, which isn't typically linked to condensate clogs. However, a comprehensive heating system inspection from O'Brien's can identify all factors affecting your HVAC health. We'll clear the clog, check for proper furnace installation and pitch on the drain line (a common culprit in our area), and ensure your fireplace and primary heating systems are operating independently and efficiently for total home comfort.

Business Location & Hours



Mon:Open 24 hours
Tue:Open 24 hours
Wed:Open 24 hours
Thu:Open 24 hours
Fri:Open 24 hours
Sat:Open 24 hours
Sun:Open 24 hours


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