HVAC Services in Londonderry, NH 03053
Trusted HVAC Services for Homes and Businesses in Londonderry.
Custom Climates installs and services heating and cooling systems throughout Londonderry, NH — water heaters, room heaters, heat pumps, furnaces, and boilers. Free quotes, financing options, and 24/7 emergency service.
Recent completed work in Londonderry includes a water heater installation ahead of the January cold and a Rinnai room-heater replacement — steady, right-sized jobs done when promised. From the apple orchards off Route 102 to the family neighborhoods around town, we treat every property like it’s the only one on the schedule.
Call (603) 262-1623 or request a free quote online — we answer 24/7 for emergencies.
Residential HVAC Services in Londonderry
We help homeowners in Londonderry maintain comfortable, efficient homes year-round with services that include:
Heat Pump Installation & Repair
Energy-efficient heating and cooling designed for New Hampshire weather
Ductless Mini Split Systems
Zoned comfort solutions for targeted temperature control and lower energy use
Air Conditioning Installation & Service
Reliable cooling systems built for summer humidity and best performance
Furnace Installation & Repair
Dependable heating systems for long, cold winters
Boiler Service & Hydronic Heating
Installation, repair, and maintenance for hot water and radiant heating systems
Ventilation & Indoor Air Quality Solutions
ERVs, HRVs, filtration, and humidity control for healthier indoor air
Commercial HVAC Services in Londonderry
We install, service, and maintain heating and cooling systems for Londonderry businesses, property managers, and facility operators — offices, retail, and light commercial buildings. From system assessments and replacements to preventative maintenance contracts, we keep equipment running through peak season.
See our full commercial service overview or call (603) 262-1623 to talk through your building.
Commercial HVAC Solutions in Londonderry
We work with businesses, property managers, and facility operators throughout Londonderry to deliver dependable, commercial-grade HVAC solutions:
Commercial Heating & Cooling Systems
Installation and service for offices, retail, and light commercial buildings
Commercial Heat Pump Systems
Energy-efficient options for lower operating costs
Zoned & Multi-Area HVAC Designs
Solutions for buildings with varying comfort demands
Preventative Maintenance Contracts
Scheduled service plans focused on uptime and reliability
Emergency HVAC Repair
Responsive service for critical system failures
System Assessments & Upgrades
Evaluation and replacement of aging equipment to improve efficiency and performance
Why Property Owners in Londonderry Choose Custom Climates
Londonderry homeowners keep calling us for straightforward reasons — honest recommendations, systems sized to the building, and technicians who show up when scheduled.
We also serve nearby Derry and Salem, plus 60+ towns across Southern New Hampshire.
Heating and Cooling in Londonderry: Small Jobs Done Right, Big Jobs Done Thoroughly
Not every HVAC visit needs to be a five-figure project — sometimes it’s a water heater that gave out before the holidays or a room heater that won’t hold. We do those jobs, and we do them right. When a property does need a full system — cold-climate heat pumps built to keep heating at outdoor temperatures as low as −13°F, or a new furnace or boiler — the same crew that shows up for the small jobs handles the whole-home ones.
Comparing options? See financing options for larger installs.
Recent Heating & Cooling Projects in Londonderry
Our recent Londonderry jobs are the honest, unglamorous kind — and they were done on time:
Water Heater Installation — Londonderry (winter 2025–26)
A new water heater installed over the holidays and wrapped up by mid-January — sized to the household’s real demand, no more cold showers.
Rinnai Room Heater Replacement — Londonderry (winter 2025–26)
A failing Rinnai room heater swapped for a new unit — a labor-only replacement completed in a day, keeping supplemental heat dependable through the coldest stretch of winter.
Bigger project on your mind — a heat pump, a boiler, a whole-home system? Request a free quote or call (603) 262-1623.
Schedule HVAC Service in Londonderry
If you’re dealing with comfort issues, rising energy costs, an aging system, or unexpected breakdowns, Custom Climates is here to help.
Call us for service or emergency assistance.
Request a consultation
Ask about maintenance plans for year-round reliability
Inquire about commercial service contracts and preventative maintenance. We look forward to helping you maintain reliable, efficient comfort in Londonderry, NH.
