Diamond Heating: Your Trusted HVAC Partner in Seaside, OR

For over three decades, Diamond Heating has been the go-to HVAC company for homeowners and businesses in Seaside, OR and the surrounding North Coast communities. Founded in 1989, this family-operated business brings a deep local understanding to every job, from fixing a faulty furnace to installing a new energy-efficient system. They know how the coastal climate, with its cool, damp winters and mild summers, affects heating and cooling needs in local homes.

The team at Diamond Heating Seaside OR is available for emergency repairs to get your heat or hot water back on track quickly. With a staff boasting over 150 years of combined experience, they handle both residential and commercial projects with equal skill. Whether it's a historic cottage in Astoria or a new construction in Cannon Beach, they have the expertise to deliver reliable comfort.

Key Services for Your Home or Business

Diamond Heating provides a full range of heating, cooling, and home comfort solutions. Their services are grouped to meet common needs:

  • Heating & Cooling Systems: Installation, repair, and maintenance for furnaces, ductless mini-splits, and complete HVAC systems. They help keep your home warm in winter and comfortable year-round.
  • Fireplace & Fire Heating Services: From cleaning and inspection to full installation and repair of fireplaces and inserts. They ensure your fireplace is safe, efficient, and ready for those cozy Seaside evenings.
  • Water Heater Solutions: Installation and repair for both traditional and tankless water heaters, so you never run out of hot water.
  • Preventive Maintenance: Scheduled check-ups and maintenance agreements to help your systems run smoothly, improve efficiency, and prevent costly breakdowns.

Areas Served with Local Knowledge

Diamond Heating proudly serves a wide area of the Oregon Coast. Their service towns include Astoria, Warrenton, Tillamook, Clatskanie, Cannon Beach, Gearhart, Pacific City, Depoe Bay, Rockaway Beach, and many smaller communities like Svensen and Bayside Gardens.

This extensive coverage means they understand the variety of homes and buildings in the region—from beachfront properties to inland farms. They know which systems work best with local weather patterns and building styles.

Company History: Built on Quality and Service

Diamond Heating started in 1989 when founder Dan Nelson decided to bring his HVAC expertise to the Seaside area. Dan began his career in the industry ten years earlier in McMinnville, OR. From day one, his vision focused on quality workmanship, treating customers right, and continuously learning about the best heating and cooling options for the local community.

That core philosophy hasn't changed. The company has grown by sticking to simple principles: listen to the customer's needs, focus on enhancing comfort, and find ways to save them money on energy bills.

Leadership with Deep Roots

Owner Dan Nelson's long history in Oregon's HVAC industry gives Diamond Heating a distinct advantage. He's not just a business owner; he's a local tradesperson who understands the practical needs of coastal living. His commitment to the community shows in the company's reliable presence and its investment in training for the team.

This local leadership means decisions are made right here, with an eye on what's best for neighbors and local businesses.

What Makes Diamond Heating Stand Out

Several key strengths set Diamond Heating apart:

  • Expert Guidance: They help you choose the right system for your home, offering brands like Trane, Lennox, and Mitsubishi.
  • Efficiency Focus: Their solutions aim to reduce your energy use and lower utility costs.
  • Fast, Reliable Service: They get the job done correctly and on time.
  • Strong Warranties: They stand behind their work and the products they install.
  • Free Estimates: They provide no-obligation quotes for new installations or replacements.

Why Locals Choose Diamond Heating in Seaside, OR

Residents and business owners across the North Coast turn to Diamond Heating for consistent, trustworthy service. Their long-standing presence since 1989 proves their reliability. They combine old-fashioned customer care with modern, efficient technology. When you need HVAC, fireplace, or water heater help, Diamond Heating Seaside OR delivers the comfort and peace of mind you expect from a local expert.

You can reach them during regular business hours, Monday through Friday. For a free estimate on your next project, give Diamond Heating a call.

Contact Information

Diamond Heating

★★★★☆ 3.5 / 5 (23)

: 1425 N Roosevelt Dr, Seaside, OR 97138

: (503) 717-1667

: http://www.diamondheating.net

Business Services

  • Fireplace cleaning
  • Fire heating system conversion
  • Fire heating system inspection
  • Fire heating system installation
  • Fire heating system repair
  • HVAC installation or replacement
  • HVAC system repair
  • HVAC system maintenance
  • Fireplace installation
  • Fireplace insert installation
  • Fireplace repair
  • Fireplace insert repair
  • Water heater installation
  • Water heater repair

Business Location & Hours



Mon:8:00 AM - 5:00 PM
Tue:8:00 AM - 5:00 PM
Wed:8:00 AM - 5:00 PM
Thu:8:00 AM - 5:00 PM
Fri:8:00 AM - 5:00 PM
Sat:Closed
Sun:Closed




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