Sources
Should I repair my Triangle Tube or replace it?
- Energy Vanguard, "6 Ways Your Oversized HVAC System Makes Things Worse" (Allison Bailes, February 24, 2026)
https://www.energyvanguard.com/blog/6-ways-your-oversized-hvac-system-makes-things-worse/ - ACCA, Manual J Residential Load Calculation
https://www.acca.org/standards/technical-manuals/manual-j - Winsupply Steamboat Springs line card, pulled September 20, 2026: Lochinvar and Navien stocked as replacement lines
https://www.winsupplyinc.com/ - Yampa Valley Mechanical, Repairs → Heating, diagnostic visit envelopes
https://yvmechanical.com/repairs-heating.html