Older Home Gas Line and Furnace Upgrade — Hyrum Main Street Home, October 2024
This case study documents a comprehensive natural gas piping replacement project combined with furnace upgrade at a 1965 home on Hyrum Main Street. The project addressed both immediate concerns (failing 1995 furnace approaching end-of-life) and underlying infrastructure issues (deteriorating original black iron gas piping with several previous patch repairs). The combined scope provided both reliability improvement and longer-term safety improvement for the substantial heritage home.
Initial Concern
Homeowner consultation: “Our furnace is from 1995 and the technician on our last service call mentioned that the gas piping from the meter to the furnace looks substantially deteriorated — said it would be a good idea to replace the gas line during furnace replacement. The piping is original 1965 black iron with several patches over the years where small leaks were repaired. We’d rather address all of this together than do furnace work now and gas piping work in a few years.”
Property Context
- Home: 1,950 sq ft 3-bedroom 1.5-bath single-story home, 1965 construction; Main Street heritage residential area in Hyrum
- Existing furnace: 1995 American Standard 90% AFUE 75 kBTU gas furnace; 29 years at service; substantial wear; reliability concerns during 2023–2024 winter
- Existing AC: 2018 American Standard 14 SEER 2.5-ton AC; reasonable condition with substantial remaining service life
- Gas piping: Original 1965 black iron gas piping from utility meter (north exterior wall) through basement to furnace; approximately 32 feet of piping with 4-5 previous patch repairs over the years; substantial deterioration visible at several points
- Existing piping concerns: Black iron rust visible at multiple joints; several previous patch repairs with epoxy or other temporary fixes; gas company had advised replacement during their last meter inspection but had not required it; the patch repairs were maintaining sealed operation but the cumulative condition suggested replacement appropriate before complete failure
- Mechanical room: Basement utility room with substantial original character; reasonable access for replacement work
- Service relationship: Long-term Velox customer through Comfort Club coverage; 2023 fall furnace tune-up had identified the gas piping concern
Diagnostic and Planning
- Gas piping inspection: Comprehensive walkthrough of all visible gas piping from meter to furnace; documented condition of each section; identified specific patch repair locations; assessed overall condition
- Pressure testing of existing piping: Pressure test conducted at typical operating pressure; piping holding pressure adequately but the patch repair history suggested gradual deterioration would continue; replacement was prudent vs. continued patching
- Manual J for furnace sizing: Heat loss calculation for the home produced design heat loss of 48,500 BTUH at 3°F design conditions; substantially smaller than the existing 75 kBTU furnace output suggesting potential oversizing; the 60–70 kBTU furnace range appropriate for actual load
- Replacement scope: Complete gas piping replacement from utility meter to furnace with new black iron piping (modern construction standard for natural gas residential applications); appropriately-sized 60 kBTU two-stage furnace replacement; coordinated installation; pressure testing per code
- Equipment selection: Carrier Performance 95% AFUE 60 kBTU two-stage gas furnace (right-sized for actual home load; two-stage operation for better partial-load efficiency); compatible with existing 2018 AC equipment for cooling integration
- Hyrum permit consideration: Gas piping replacement requires specific permit and inspection; coordination with Hyrum building department scheduled
Installation Work
- Utility coordination — Dominion Energy notified for gas service shutdown during piping replacement; coordination for service restoration
- Old gas piping removal — substantial scope including disconnect at meter, removal of all old piping through basement, removal of furnace connections; appropriate handling of legacy piping
- New gas piping installation — new black iron piping installation following appropriate routing; proper sizing (3/4” main run, appropriate transitions); proper joints with appropriate sealing compound (not Teflon tape for gas applications); appropriate hangers and supports
- Pressure testing — comprehensive pressure testing per code requirements; appropriate test duration and documentation
- Old furnace removal — disconnect of remaining connections; physical removal of 1995 equipment; appropriate disposal
- New furnace installation — Carrier Performance 60 kBTU furnace installed in mechanical room; appropriate clearances; new gas connection from new piping; appropriate venting (existing sidewall PVC venting verified compatible); electrical service connection; condensate drainage
- System integration — new furnace coordinated with existing 2018 AC for combined operation; appropriate refrigerant coil verification; thermostat compatibility verified
- Utility service restoration — Dominion Energy meter restored to active service; final pressure verification
- Commissioning — combustion analysis verifying safe operation; two-stage operation testing; AC operation verification with new furnace blower; complete operational verification
- Hyrum permit inspections — gas piping inspection by Hyrum building department; mechanical inspection; both approved
Cost and Documentation
- Carrier Performance 95% AFUE 60 kBTU two-stage furnace: $4,485
- Furnace installation labor and materials: $2,485
- Gas piping replacement (32 feet, materials and labor): $3,485
- Pressure testing and Dominion Energy coordination: $385
- Old equipment removal and disposal: $245
- Hyrum permit (gas piping plus mechanical): $385
- Sales tax: $585
- Total Velox project cost: $12,055 (approximately $11,985 with Comfort Club coordination)
- Payment: Home equity line of credit; financing also offered through manufacturer programs but homeowner chose to use existing line
- Documentation: Comprehensive project documentation including gas piping pressure testing records, equipment specifications, warranty registration, permit inspection records
Timeline
- Initial consultation: September 10, 2024
- Detailed proposal delivered: September 16, 2024
- Homeowner authorization: September 23, 2024
- Equipment ordering: September 23 to October 4, 2024
- Hyrum permit application: October 1, 2024
- Permit approval: October 3, 2024
- Dominion Energy coordination: October 7 (utility scheduling)
- Installation work: October 14–15, 2024 (2 days; substantial scope warranted extended installation)
- Hyrum permit inspection: October 18, 2024 (approved)
- Total project duration: 6 weeks from initial consultation to final inspection
Outcome
- Equipment operating reliably through 2024–2025 winter without service calls
- Right-sizing benefits realized — 60 kBTU furnace appropriately matched to 48,500 BTUH design load; two-stage operation provides better partial-load efficiency than previous oversized single-stage operation
- Gas piping safety substantially improved — new black iron piping with proper modern joints replaces 59-year-old piping with multiple patch repairs; substantial safety improvement; pressure testing verified leak-free installation
- Combustion safety improvement — new sealed combustion equipment provides substantial safety improvement vs. 1995 equipment; reliable operation independent of atmospheric conditions
- Energy cost reduction — estimated 18–25% reduction in annual heating gas consumption vs. previous oversized equipment; substantial savings reflecting both efficiency improvement and right-sized operation
- Comfort improvement — two-stage operation produces substantially better temperature consistency than previous single-stage operation; longer cycles eliminate temperature swings
- Equipment expected service life — properly-sized and installed equipment expected 18–22 year service life; new gas piping expected 50+ year service life under typical residential conditions
- Long-term peace of mind — the comprehensive infrastructure work addresses both immediate furnace replacement need and underlying gas piping concerns that would have required separate (and disruptive) future work; the combined approach was substantially more practical than separate projects
- Comfort Club continuation with annual maintenance scheduled for all equipment
Reflection on This Case
This case illustrates the substantial value of addressing infrastructure issues during equipment replacement: the gas piping replacement would have eventually been required anyway as the patch repair history suggested ongoing deterioration; combining the work with furnace replacement substantially reduced total project disruption and avoided future separate gas piping work; the comprehensive scope provides decades of reliable safe operation vs. continued reactive maintenance on aging infrastructure. The honest framing for Cache Valley homeowners with similar aging-home scenarios: original gas piping in homes 50+ years old often warrants replacement consideration even when not yet failing; the patch repair history is a substantial indicator of cumulative deterioration; replacement during equipment work is substantially more practical than separate future projects. The Hyrum permit and Dominion Energy coordination requirements add modest complexity to the project but are essential for safety; we routinely coordinate these scopes for gas piping work and the process is well-established. The substantial total cost ($11,985) reflects the substantial scope; the alternative (furnace replacement now plus gas piping replacement in 2–5 years) would have produced higher total cost and substantially more disruption. For other Hyrum Main Street and similar heritage neighborhood homes (Logan, Providence, Hyde Park all have substantial 1900s through 1970s residential areas with similar original infrastructure), this case study illustrates the appropriate comprehensive approach. The 32-foot gas piping run is typical for residential homes of this era; longer or shorter runs at other homes would scale the gas piping portion of the project proportionally.
Related Services and Resources
- Gas line installation service
- Furnace installation service
- Furnace repair service
- Hyrum general HVAC service
- Comfort Club maintenance plans
- All case studies
Contact Velox Heating and Air
- Phone (24/7): (385) 250-2653
- Address: 2427 N Main St, Logan, UT 84341
- Email: info@veloxheatingandair.xyz
- Utah DOPL HVAC Contractor License: #10234567-5501
- EPA Section 608 Universal: #608U-2011-385729
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