Efficiency Heating & Cooling

Furnace Conversion Services in the Greater Portland Area

Transform your home with our professional Furnace Conversion services, switching from costly oil or electric heating to efficient natural gas. Save up to 60% on heating bills while enjoying reliable, consistent warmth throughout Portland’s chilly winters. Our certified conversion specialists handle every detail from permits to final testing.

Expertise

Our certified conversion specialists bring years of experience and skill to ensure your furnace conversion is seamless and code-compliant.

Efficiency

Converting to natural gas helps you enjoy lower heating bills and optimal furnace performance with modern high-efficiency technology.

Comfort

Our gas furnace conversions enhance indoor comfort and air quality, eliminating oil odors and electric heating’s dry air.

Thinking About Converting Your Heating System?

While electric heating systems have their place, many Portland homeowners are discovering the benefits of converting to a gas furnace.

Gas furnaces provide more consistent and efficient heating, especially during the colder months. Unlike electric systems, gas furnaces can generate heat more quickly and at a lower cost, making them a preferred choice for those seeking both comfort and savings.

Contact us today to learn more about our electric to gas furnace conversion services.

Greater Portland Furnace Conversion Experts for Homes & Businesses

Converting from electric to gas isn’t just about swapping out units; it requires careful planning and expert installation to ensure safety and efficiency.

That’s where our certified technicians come in. We specialize in seamless electric to gas furnace conversions, ensuring your new system operates at peak performance from day one.

Read Verified Reviews About Our Electric Furnace Conversion Services in the Portland Area

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Rick J.
Rob from Efficiency Heating and Cooling provided an estimate for replacing our furnace and AC. The estimate was competitive and reasonable for the job. He did an excellent job explaining options and didn’t try to upsell us. His communication was excellent, texting arrival time and asked if that time would still work. Communication with the office was also excellent from scheduling to follow up. Overall so far excellent customer service.
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Jerry A.
Trae was very helpful and professional. I will definitely use Efficiency Heating and Cooling again.
Response from the owner:Thank you, Jerry, for your exceptional feedback! We're thrilled to hear that Trae provided you with helpful and professional service. We look forward to assisting you again with your heating and cooling needs.
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Alice H.
I had a great experience working with Efficiency - they were recommended to me by my real estate agent! Had routine furnace/AC maintenance with Jim, who did a fantastic job and discovered a leak in my furnace. He promptly got me scheduled for a quote visit with Jason. He is super friendly and answered all my questions about furnaces - Jason got me a great quote on a new furnace! Kellen and his team did an excellent job installing it. Overall a great experience and I look forward to seeing them again for my next HVAC maintenance!

Update 10/23/2025
I had the pleasure of working with Jim again after my furnace went out one week ago. He quickly swapped out the wire and ordered the new part to fix the issue. We are lucky to have heat and appreciate the great service as always!
Response from the owner:Thank you, Alice for the 5 star review. We are thrilled to hear that your experience with Efficiency Heating & Cooling, was a great one. We are happy to learn that Jim and Jason provided excellent service . We are also glad that Kellen and his team did a fantastic job with the installation of your new furnace. Thank you for choosing us for your HVAC needs, and we look forward to seeing you again for your next maintenance appointment. Take care!
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Chet A.
Response from the owner:Your 5-star review made our day! Thanks for choosing us.
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Lisa M.
Tristan did a great job and was very professional. He explained what he was doing and was very thorough! Tristan and Efficiency impressed me once again.
Response from the owner:Thank you Lisa for your business and kind feedback
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Robin S.
Response from the owner:Thank you for the 5-Star review Robin Sawaske.
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Joshua L.
Nick's expedience, expertise, and quality of service with a duct cleaning really was stellar – Great knowledge about HVAC systems and infrastructure, friendly & professional. I appreciate the views that were provided from before and after the service. I can sense the improvement in running the furnace and quality of airflow.
Response from the owner:Thank you so much for the wonderful review, Joshua! We're thrilled that Nick provided stellar duct cleaning service with his expertise and professional approach. We're glad you appreciated the before-and-after views and are already experiencing improved airflow and furnace performance.​ Nick and our entire team appreciate your kind words. If you need anything in the future, don't hesitate to reach out at (503) 908-6066 or 971-360-9787, or visit eheatcool.com.​ Thank you for trusting Efficiency Heating and Cooling! — The Efficiency Heating and Cooling Team
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Jean T.
Response from the owner:We appreciate your 5-star rating! It's wonderful to know we met your expectations.
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Alberto M.
Our furnace has been serviced by Efficiency Heating and Cooling for several years and the experience has been good.
Response from the owner:Thank you so much for the wonderful review, Alberto! We're thrilled to have been servicing your furnace for several years and truly appreciate your continued trust in Efficiency Heating and Cooling. It means the world to us that you've had consistently good experiences with our heating system maintenance.​ We value long-term relationships with our customers like you, and we're committed to providing the same reliable, quality service for many years to come. If you ever need anything—whether it's routine maintenance, repairs, or questions about your heating system—don't hesitate to reach out to us at (503) 908-6066 or 971-360-9787.​ Thank you for being a loyal customer! — The Efficiency Heating and Cooling Team
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Sanjay B.
Response from the owner:Thank you so much for the 5-star review, Sanjay! We're thrilled that you're happy with our ductless heating and A/C services. Ductless mini-split systems are a fantastic solution for efficient, year-round comfort, and we're glad we could help you with yours.​ If you ever need maintenance, service, or have questions about your ductless system, don't hesitate to reach out to us at (503) 908-6066 or 971-360-9787, or visit eheatcool.com. We're always here to help keep your home comfortable.​ Thank you for trusting Efficiency Heating and Cooling! — The Efficiency Heating and Cooling Team
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Portland’s Top Locally-Owned Furnace Conversion Company

Explore our specialized electric to gas furnace conversion services, designed to enhance the efficiency and comfort of both residential and commercial properties. Whether you’re looking to reduce energy costs or improve heating performance, our experts ensure a seamless and safe conversion process.

Contact us today to schedule your conversion or get answers to any questions you may have about upgrading your heating system.

More Information

Understanding Natural Gas Furnace Conversions in Portland Metro

There’s that smell again from your basement. Your oil tank is showing its age, and instead of another costly repair, you’re considering converting to natural gas. But what will an oil-to-gas furnace conversion cost Portland homeowners like you?

Converting to natural gas heating represents one of the most impactful home improvements for Portland metro homeowners seeking lower energy bills and improved comfort. Whether you’re in Beaverton’s Cedar Hills, Lake Oswego’s Mountain Park, or Tigard’s Summerlake neighborhood, switching from an oil furnace or electric heating to a gas furnace delivers immediate savings of 30-60% while increasing your Portland-area home’s value.

What You Need to Know:

Why Portland Homeowners Convert from Oil or Electric to Gas

Before diving into costs, let’s understand why Portland metro homeowners are making the switch:

Cost Savings: With Portland General Electric (PGE) rates among the highest in the Pacific Northwest and heating oil prices fluctuating unpredictably, natural gas conversions have become increasingly popular throughout Multnomah, Washington, and Clackamas counties. Natural gas costs 50-70% less per BTU than electricity and 30-50% less than heating oil.

Efficiency: Modern gas furnaces achieve up to 98% AFUE ratings, meaning 98 cents of every dollar spent on fuel is converted into heat for your home. Compare this to older oil furnaces, which operate at 60-80% efficiency, or electric resistance heating, which operates at 100% efficiency but triples the operating cost.

Convenience: No more monitoring oil tank levels during Portland’s unexpected cold snaps or scheduling emergency deliveries when atmospheric rivers hit. NW Natural provides a continuous fuel supply through underground pipes—no deliveries, no running out.

Environmental Impact: Natural gas burns cleaner than oil, producing 30% fewer carbon emissions—significant for environmentally-conscious Portland residents. It also eliminates the risk of soil contamination from leaking oil tanks.

Home Value: Portland’s Home Energy Score program favors efficient heating systems. Homes with natural gas typically sell faster and for 3-5% more than comparable oil-heated homes in the metro area.

Propane vs. Natural Gas for Portland Homes

Natural Gas Benefits in Portland Metro:

  • Availability: NW Natural’s pipeline network reaches 95% of Portland metro neighborhoods
  • Cost-Effective: Lower per-BTU cost than propane once connected
  • Convenience: No tank rentals, refills, or on-site storage
  • Stable Pricing: More predictable rates than propane or heating oil

When Propane Makes Sense:

  • Rural areas like Boring, Sandy, or unincorporated Washington County, without gas lines
  • Temporary heating solutions during construction
  • Backup heating systems for emergency preparedness

The Choice: For 90% of homes in the Portland metro area, natural gas is the optimal choice due to existing infrastructure. If your neighborhood has gas lines (check with NW Natural), natural gas provides the best long-term value.

Complete Cost Breakdown of Oil-to-Gas Furnace Conversion in Portland

1. Replacing the Furnace Unit

Equipment Costs:

  • Standard efficiency (80% AFUE): $2,500 – $4,000
  • High efficiency (90-95% AFUE): $3,500 – $6,000
  • Ultra-high efficiency (96-98% AFUE): $4,500 – $7,500

Installation Fees:

  • Basic installation: $1,500 – $2,500
  • Complex installation with ductwork modifications: $2,500 – $4,000
  • Portland permit fees: $150 – $350

2. Running New Gas Lines

Gas Line Installation Costs:

  • From meter to furnace (typical): $500 – $1,500
  • New service from street (if needed): $2,000 – $5,000
  • NW Natural connection fee: $150 – $300
  • Gas piping permits: $75 – $150

3. Oil Tank Removal (Oregon DEQ Compliant)

Tank Decommissioning Costs:

  • Above-ground tank removal: $500 – $1,500
  • Underground tank removal: $1,500 – $3,500
  • In-place decommissioning (filling with foam): $1,000 – $2,000
  • Soil testing (if required): $300 – $800
  • DEQ documentation and disposal fees: $200 – $500

Important Note: Underground tanks in older Portland neighborhoods, such as Laurelhurst, Irvington, and Rose City Park, often require soil testing. If contamination is found, remediation can add $5,000 – $15,000.

4. Additional Costs to Consider

  • Chimney liner: $800 – $2,000 (required for gas venting)
  • Electrical upgrades: $200 – $500
  • Thermostat upgrade: $150 – $350 for programmable/innovative models
  • Ductwork modifications: $500 – $1,500
  • Asbestos abatement: $500 – $2,000 (for homes built before 1980)

Total Estimated Investment

Typical Portland Oil-to-Gas Conversion: $7,000 – $15,000

  • Basic conversion with above-ground tank: $7,000 – $10,000
  • Complex conversion with underground tank: $10,000 – $15,000
  • Premium high-efficiency system: $12,000 – $18,000

Available Rebates and Incentives (2025)

  • NW Natural conversion rebate: Up to $1,500
  • Energy Trust of Oregon: $350 – $800 for qualifying systems
  • Federal tax credit: Up to 30% of equipment cost
  • Oregon Residential Energy Tax Credit: Variable based on efficiency
  • Portland Clean Energy Fund: Low-interest financing available

Net Cost After Incentives: $5,000 – $12,000

Step-by-Step Conversion Process

Week 1: Assessment and Planning

  • Home energy evaluation
  • Gas availability verification with NW Natural
  • Equipment sizing calculations
  • Permit applications submitted

Week 2: Infrastructure Preparation

  • Gas line installation from street (if needed)
  • Interior gas piping installation
  • Electrical upgrades
  • Oil tank draining and removal scheduling

Week 3: System Installation

  • Old furnace removal
  • New gas furnace installation
  • Venting system installation
  • Thermostat and controls setup
  • Oil tank removal/decommissioning

Week 4: Testing and Commissioning

  • Gas pressure testing
  • Combustion analysis
  • Safety inspections
  • Final permit approval
  • System operation training

Long-Term Savings Analysis for Portland Homeowners

Annual Operating Cost Comparison (2,000 sq ft Portland home)

Heating TypeAnnual CostSavings vs Oil
Oil Heat (current)$2,400 – $3,200
Natural Gas (after conversion)$800 – $1,400$1,600 – $1,800
Electric (PGE rates)$2,800 – $3,800-$400 to -$600

Return on Investment Timeline

Based on average Portland energy costs and typical conversion expenses:

  • Simple payback period: 5-7 years
  • 10-year net savings: $8,000 – $15,000
  • 20-year net savings: $20,000 – $35,000
  • Home value increase: $5,000 – $10,000 immediately

Additional Financial Benefits

  • Reduced maintenance costs: Save $200-400 annually
  • No oil tank insurance riders: Save $100-200 annually
  • Eliminated delivery fees: Save $50-100 per delivery
  • More predictable budgeting with stable gas prices

Electric to Gas Furnace Conversion in Portland

Electric-to-gas furnace conversions offer the most significant potential for reducing energy bills, particularly in larger homes in the Portland metro area, such as those in West Linn’s Hidden Springs, Lake Oswego’s Palisades, and Beaverton’s Murrayhill.

Why Portland Homes Have Electric Heat

Many Portland homes built between 1960 and 1990 feature electric heating due to historically low electricity rates and the“all-electric home” marketing of that era. Today, with PGE’s tiered rate structure, these systems cost 2-3 times more to operate than natural gas.

Electric-to-Gas Conversion Specifics

  • Typical cost: $6,000 – $12,000
  • Annual savings: $1,200 – $2,400
  • Payback period: 3-5 years
  • Common in: Cedar Hills, Bethany, Rock Creek, Forest Heights

Water Heater Conversion Opportunities

Water heater conversions often accompany furnace projects in Portland homes, maximizing the benefits of natural gas throughout your home. Converting both appliances simultaneously reduces installation costs while providing comprehensive energy bill reductions, which is significant given the Portland Water Bureau’s rates.

Combined Conversion Benefits

  • Shared gas line installation costs
  • Single permit and inspection process
  • Additional Energy Trust rebates
  • Extra $300-500 annual savings

Choosing Your Portland Conversion Partner

What to Look for in a Conversion Specialist

Essential Qualifications:

  • Oregon CCB licensed and bonded
  • NW Natural certified installer
  • DEQ certified for oil tank removal
  • Energy Trust of Oregon trade ally
  • Portland metro permit experience

Services They Should Provide:

  • Free in-home energy assessment
  • Complete project management
  • All permit coordination
  • Rebate application assistance
  • Financing options
  • Comprehensive warranties

Red Flags to Avoid

  • No Oregon CCB license number
  • Unwilling to pull permits
  • No oil tank removal certification
  • Extremely low bids (often exclude critical work)
  • Pressure tactics or“”today onl”” deals

Portland-Specific Considerations

Neighborhood Factors

Older Neighborhoods (Pre-1960): Eastmoreland, Laurelhurst, Irvington, Mount Tabor

  • Higher likelihood of underground oil tanks
  • May need electrical panel upgrades
  • Potential asbestos concerns
  • Historic district considerations

Mid-Century Neighborhoods (1960-1980): Cedar Hills, Garden Home, Raleigh Hills

  • Often have above-ground oil tanks
  • Electrical systems are usually adequate
  • Good candidates for straightforward conversions

Newer Areas (1980+): Bethany, Cooper Mountain, Happy Valley

  • May have propane or electric heat
  • Gas lines are often already available
  • Modern electrical systems

Seasonal Timing Considerations

Best Time to Convert:

  • Spring (April-May): Ideal for underground tank removal
  • Summer (June-August): Contractors are less busy, and faster scheduling
  • Early Fall (September-October): Complete before heating season

Avoid Converting:

  • Winter (December-February): Emergency pricing, frozen ground issues
  • Late Fall (November): Risk of cold weather before completion

Frequently Asked Questions

Q: How long does the entire conversion process take?

A: Typically 2-4 weeks from permit application to final inspection. The actual installation work takes 2-3 days.

Q: Can I convert if natural gas isn’t on my street?

A: NW Natural may extend service if enough neighbors are interested. Otherwise, propane is a viable alternative.

Q: What happens to my old oil tank?

A: It must be properly decommissioned per Oregon DEQ requirements—either removed entirely or filled with approved material.

Q: Are gas furnaces safe?

A: Yes, modern gas furnaces have multiple safety features, including flame sensors, pressure switches, and carbon monoxide shutoffs.

Take the Next Step

As Portland’s trusted HVAC experts serving all metro communities from Gresham to Beaverton, and from Oregon City to North Portland, we guide you through the best furnace conversion service solution for your specific needs and neighborhood requirements.

Ready to start saving? Contact us today for a free in-home assessment and detailed cost estimate for your heating conversion. We’ll evaluate your current system, explain all options, including heat pump conversions, and help you choose between complete furnace replacement or conversion.