Business Details
42 Years
experience
Emergency
services
Your Montana HVAC Experts Since 1984
All Season Heating & Air Conditioning has been serving Montana's heating and cooling needs since 1984. Founded in Helena and expanding to Shelby in 2010, our family-owned business combines decades of local expertise with industry-leading technology. Under the leadership of Peder Underdal, our team of certified technicians delivers reliable HVAC solutions across the Hi-Line region. We specialize in complete system installations, emergency repairs, and preventive maintenance programs designed to maximize equipment longevity. As a Premier Lennox Dealer with Contractor Registration #150921, we maintain rigorous standards of quality and customer satisfaction.Our commitment extends beyond technical excellence to include personalized service, transparent pricing, and community involvement through local school support. Whether addressing immediate heating emergencies or implementing energy-efficient upgrades, we prioritize timely, professional service at fair prices. Our preventive maintenance program offers regular inspections that identify potential issues before they escalate, backed by 24/7 emergency service availability. This combination of technical expertise, local knowledge, and customer-centric values has established us as Montana's trusted HVAC partner for both residential and commercial clients.
Services
HVAC Installation
Preventive Maintenance
Duct Cleaning
Dryer Vent Cleaning
Indoor Air Quality
Geothermal Systems
Emergency Repairs
Thermostat Installation
Humidification Systems
Furnace Repair
Details
- Year established: 1984
Highlights and features
- Family-owned HVAC service operating in Montana since 1984
- 24/7 emergency response with same-day service availability
- Premier Lennox Dealer with specialized equipment expertise
- Preventive maintenance program reducing system failures by 40%
- Locally managed by Peder Underdal with Montana-specific climate knowledge
Associations and certifications
- Lennox Premier Dealer
What people say
Very competent, polite technicians
Prompt & efficient service
No mess, works great
24-hour emergency response
Knowledgeable, hardworking crew
Services
HVAC Installation
We provide complete HVAC system installations for residential and commercial properties. Our technicians specialize in Lennox, Mitsubishi, and GeoComfort equipment, ensuring proper sizing and configuration for optimal efficiency. Each installation includes system analysis, energy efficiency evaluation, and manufacturer warranty registration. Our team handles both new construction and replacement projects with minimal disruption to property occupants.
Preventive Maintenance
Our preventive maintenance program includes seasonal inspections of heating and cooling systems. Technicians perform safety checks, lubricate moving parts, clean components, and test system efficiency. Regular maintenance extends equipment lifespan, improves energy efficiency, and reduces emergency repair needs. Clients receive detailed service reports and 10% discounts on replacement parts.
Indoor Air Quality
We install and service advanced indoor air quality systems including the Healthy Climate PureAir technology. Our solutions address allergens, pollutants, and humidity control through multi-stage filtration and purification processes. Systems include carbon filtration, UV irradiation, and chemical vapor removal to improve respiratory health and comfort in residential and commercial spaces.
Geothermal Systems
We design and install geothermal heating and cooling systems that utilize ground-source energy. Our systems include horizontal, vertical, and pond loop configurations with energy efficiency ratings exceeding 300%. Geothermal installations reduce utility bills by 30-70% while providing consistent temperature control and hot water production for residential and commercial properties.
Emergency Repairs
Our emergency repair service operates 24 hours daily with same-day response guaranteed. Technicians handle furnace failures, AC malfunctions, and heating emergencies throughout Montana's extreme weather conditions. Emergency service includes temporary solutions, priority parts delivery, and rapid system restoration to prevent property damage and discomfort.
People
Peder Underdal
Manager
Peder Underdal oversees Shelby operations with 20+ years of Montana HVAC experience. He leads our Hi-Line service team with expertise in cold-weather system optimization and commercial HVAC management.
Questions
Do you offer emergency HVAC service?
Yes, we provide 24/7 emergency HVAC service with same-day response guaranteed across Montana.
What heating systems do you install?
We install gas/propane furnaces, geothermal systems, and ductless mini-splits from Lennox, Mitsubishi, and GeoComfort.
Are financing options available?
Yes, we offer financing options for HVAC equipment purchases and system replacements.
Do you service existing HVAC systems?
We service most makes and models with preventive maintenance programs and repair services.
What areas do you serve?
We serve Helena, Shelby, and the Hi-Line area of Montana for residential and commercial HVAC needs.
Are you a licensed contractor?
Yes, we operate under Montana Contractor Registration #150921 with full insurance coverage.