U31 Gas Fireplace InsertEnergy by Regency® Share Manufacturer: Regency Brand: Regency® Collection: Energy Model: U31 Gas Fireplace Insert Year: 2022 Add to Quote Check Availability Ask a Question Trade-In Value Apply for Financing These "new kids on the block" are amazing. Their communications are EXCELLENT and their service as well. I had a poorly installed cap from installer recommended by a long standing competitor and will no longer use their competition! Highly recommend using Armstrongs. Timely, communicative, fairly priced! Kim Mikkelsen I shopped around to replace an old, uncertified wood stove. Armstrong's was the only shop that recommended Jake come out to do a site assessment to better help me decide on the best stove for my usage. Jake gave me a detailed, printed estimate. He was honest in his responses to my questions even when those responses were not in his favor. Jake runs the business with integrity that puts the customer at ease. I will return to Armstrong's for any future purchases. Nancy MacDonald It’s been a long time coming but I would greatly like to say thank you to Armstrong’s Stove and Spa. They did everything in the power to help with our pellet stove. They offered us every option they could to ensure our needs were met and in the end fixed our issue. Kudos to the hard working staff, so very polite, and generous. You have a customer who appreciates what you do. Thank you. Timothy Schaff Amazing people to work with! Very knowledgeable when it comes to hot tubs! Super friendly as well! Would highly recommend to others! (Which We already have.) Can’t wait to discuss fireplace options with them in the fall! Danielle Tobia Armstrong’s Of Yakima is amazing! They are very knowledgeable, friendly and very responsive with any questions I may have. We just had our new Bullfrog spa delivered. The delivery was perfect, the spa is beautiful. We are first time spa owners with a lot of questions. They went above and beyond to explain everything and answer all of my questions. I feel like we are in great hands! Thank you to the owners, and staff. I would definitely recommend them! Kaylyn Cooley The staff at Armstrong’s are always knowledgeable and attentive. We are very pleased with the fireplace inserts we’ve purchased, and they make time for us when we need maintenance or an issue resolved. Excellent, local company! Ann Snipes DescriptionThe Regency Energy U31 B-vent gas fireplace insert is well suited to installation in older homes. This mid-sized gas insert provides ample radiant and convective heat for most mid-sized living spaces. The U31 gas insert includes a variable speed blower to help circulate the warmth of the fireplace throughout the room. Rest easy knowing that you are buying a quality gas insert with Regency's industry leading limited lifetime warranty. Stay warm even during the worst storms with the U31 gas fireplace insert that continues to operate safely without electricity. Manufacturer InfoKey FeaturesEfficient upgrade to keep the heat in your homeB-vent application is ideal for older homesOperates on natural gas or propaneSafely operates without electricityVariable speed blower to distribute heat efficientlyEnergy SpecificationsNGLPMaximum BTUs30,00027,500Turn Down BTU14,50013,700Efficiency58.4559.29%EnerGuide Rating51.42%47.41%General SpecificationsProduct SizeMediumView Area380 sq.in.Room SizeMediumVent TypeB-VentVent Size (Air Intake)N/AVent Size (Exhaust)4"Min. Fireplace OpeningWidth (front)26 1/2 in.Width (back)22 1/2 in.Height21 in.Depth15 in. FeaturesVariable Air Blower Downloads Available OptionsEfficiencyBTU58.0%3000059.0%27500 Specifications Hearth Type: Fireplace Inserts Label: NG Fuel Type: Natural Gas Total Heat Output: 27500-30000 BTU Efficiencies: 58.0-59.0% Ignition Type: Automatic (Intermittent Pilot) Heating Capacity: 500 sq. ft. Size: 15.00" x 26.50" x 21.00" Share Manufacturer: Regency Brand: Regency® Collection: Energy Model: U31 Gas Fireplace Insert Year: 2022 Add to Quote Check Availability Ask a Question Trade-In Value Apply for Financing These "new kids on the block" are amazing. Their communications are EXCELLENT and their service as well. I had a poorly installed cap from installer recommended by a long standing competitor and will no longer use their competition! Highly recommend using Armstrongs. Timely, communicative, fairly priced! Kim Mikkelsen I shopped around to replace an old, uncertified wood stove. Armstrong's was the only shop that recommended Jake come out to do a site assessment to better help me decide on the best stove for my usage. Jake gave me a detailed, printed estimate. He was honest in his responses to my questions even when those responses were not in his favor. Jake runs the business with integrity that puts the customer at ease. I will return to Armstrong's for any future purchases. Nancy MacDonald It’s been a long time coming but I would greatly like to say thank you to Armstrong’s Stove and Spa. They did everything in the power to help with our pellet stove. They offered us every option they could to ensure our needs were met and in the end fixed our issue. Kudos to the hard working staff, so very polite, and generous. You have a customer who appreciates what you do. Thank you. Timothy Schaff Amazing people to work with! Very knowledgeable when it comes to hot tubs! Super friendly as well! Would highly recommend to others! (Which We already have.) Can’t wait to discuss fireplace options with them in the fall! Danielle Tobia Armstrong’s Of Yakima is amazing! They are very knowledgeable, friendly and very responsive with any questions I may have. We just had our new Bullfrog spa delivered. The delivery was perfect, the spa is beautiful. We are first time spa owners with a lot of questions. They went above and beyond to explain everything and answer all of my questions. I feel like we are in great hands! Thank you to the owners, and staff. I would definitely recommend them! Kaylyn Cooley The staff at Armstrong’s are always knowledgeable and attentive. We are very pleased with the fireplace inserts we’ve purchased, and they make time for us when we need maintenance or an issue resolved. Excellent, local company! Ann Snipes Regency® Inventory We Have See All 2023 Regency® Pro-Series F3500 Wood Stove In StockFloor Model Location Yakima Showroom Learn More Add to Quote 2023 Regency® Classic™ C34 Gas Stove In StockFloor Model Location Yakima Showroom Learn More Add to Quote 2023 Regency® Pro-Series CI2700 Wood Insert In StockNew Location Yakima Showroom Learn More Add to Quote 2022 Regency® Cascades™ F2500 Wood Stove In StockNew Location Yakima Showroom Learn More Add to Quote 2023 Regency® Classic™ F2450 Wood Stove In StockNew Location Yakima Showroom Learn More Add to Quote 2023 Regency® Cascades™ F1500 Wood Stove In StockNew Location Yakima Showroom Learn More Add to Quote 2023 Regency® Classic™ I2450 Wood Insert In StockNew Location Yakima Showroom Learn More Add to Quote 2023 Regency® Ultimate™ U39 Gas Stove In StockDemo Location Yakima Showroom Learn More Add to Quote Energy A Collection By Regency® See All Energy™ E33 Gas Fireplace Insert Starting MSRP Learn More Add to Quote Energy E18E Gas Insert Starting MSRP Learn More Add to Quote Hearth Appliances We Can Order See All Vector™ 38 See Through Linear Gas Fireplace Starting MSRP Learn More Add to Quote Traditional FP16 Arch LE Zero-Clearance Fireplace Starting MSRP Learn More Add to Quote Gemini Direct-Vent Traditional Fireplace Starting MSRP Learn More Add to Quote Cineview™ 26 Electric Fireplace Insert Starting MSRP Learn More Add to Quote City Series™ Chicago Corner 40RE Starting MSRP Learn More Add to Quote Compass DLX Linear Direct-Vent Linear Contemporary Fireplace Starting MSRP Learn More Add to Quote Alluravision™ 60 Slimline Linear Electric Fireplace Starting MSRP Learn More Add to Quote Ascent™ Multi-View 3 Sided Fireplace With Fire Cradle Starting MSRP Learn More Add to Quote Liberty® L234 Gas Fireplace Insert Starting MSRP Learn More Add to Quote Skope E195 Electric Fireplace Starting MSRP Learn More Add to Quote Cast Iron Metallic Black Knightsbridge™ Gas Stove Starting MSRP Learn More Add to Quote Landscape Pro Multi-Sided Electric Fireplace Starting MSRP Learn More Add to Quote Quick Search Hearth Appliances (43)Hot Tubs & Swim Spas (6)Grills & Outdoor Kitchens (1) Hearth Appliances (401)Fire Pits & Patio Heaters (95)Grills & Outdoor Kitchens (81)Hot Tubs & Swim Spas (24)Garden Structures (4) All Hearth TypesFireplaces (193)Stoves (74)Fireplace Inserts (67)Wall Mounted Fireplaces (31)Outdoor Fireplaces (15)Log Sets (13)Fireboxes (6)Outdoor Fireboxes (2) All Fuel TypesNatural Gas (225)Propane (135)Wood (89)Electric (60)Pellet (16) All FeaturesRemote Control (256)Variable Air Blower (133)Color Changing (86)Multi-Sided (66)Air Wash (66)Zero Clearance (29)Made in USA (22) All Hearth TypesStoves (20)Fireplaces (13)Fireplace Inserts (10) All Fuel TypesWood (21)Natural Gas (9)Propane (8)Pellet (5) All FeaturesRemote Control (17)Air Wash (11)Variable Air Blower (8)Zero Clearance (6)Color Changing (2)Multi-Sided (2)Made in USA (1) Go While every reasonable effort is made to ensure accuracy, due to continuous product improvement, standard features, options, pricing, and specifications may change at any time without notice. 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