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SEER2, HSPF2, and COP Explained: Calculating Heat Pump Efficiency Ratings
A technical thermodynamic breakdown of SEER2, EER2, HSPF2, and COP heat pump efficiency metrics, detailing DOE Appendix M1 test protocols and temperature degradation curves.
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Crawl Space Dehumidifier Sizing Protocol: Calculating Cubic Footage, Air Infiltration & PPD Demands
A comprehensive engineering methodology for sizing crawl space dehumidifiers, accounting for cubic footage, soil vapor emissions factors, air infiltration rates, and AHAM PPD requirements.
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AlorAir HDi90 Review: 90 PPD Basement & Crawlspace Dehumidifier with Built-In Condensate Pump
An in-depth technical review of the AlorAir HDi90 commercial dehumidifier, featuring 90 PPD AHAM extraction, a 14.7-foot internal condensate pump, 2.69 L/kWh efficiency, and...
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DOE 2026 HVAC Energy Standards Update: Cold-Climate Heat Pump Rebates & Energy Star 7.0 Requirements
Regulatory analysis of the Department of Energy 2026 HVAC efficiency standards, Energy Star Version 7.0 cold-climate heat pump requirements, and IRA Section 50121/50122 electrification...
ecoSmarter Home
Ductless Mini-Split Inverter Heat Pump Review: SEER2 Telemetry, Heating COP & Latent Humidity Control
An engineering evaluation of 12,000 BTU/h twin-rotary inverter ductless mini-split heat pumps, covering 20.5 SEER2 cooling, sub-zero heating COP at -13°F, acoustic telemetry, and...
FoxyEco / JournalNewsEveryday living. Less waste.
ecoPolicy
Energy Star 5.0 Dehumidifier Standards: Protecting Crawlspaces from Summer Mold Blooms
The EPA updated Energy Star Version 5.0 specification mandates higher extraction efficiency in cool subterranean environments, protecting crawlspaces and indoor air quality.
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Crawl Space Humidity Levels: Dew Point Calculation, Mold Thresholds & Seasonal Target Ranges
A building science guide to managing crawl space humidity, calculating dew point depression, preventing mold germination thresholds, and maintaining safe wood moisture levels.
ecoSmarter Home
AlorAir Sentinel HD55 Review: 55 PPD Crawlspace Moisture Removal, Energy Draw & Drainage Setup
A rigorous empirical review of the AlorAir Sentinel HD55 crawl space dehumidifier, evaluating its 55 PPD moisture extraction, 2.4 L/kWh energy efficiency, gravity drainage,...
FoxyEco / JournalNewsEveryday living. Less waste.
ecoClimate
EPA Low-GWP Refrigerant Mandate: What the 2026 Shift to A2L Means for Home Heat Pumps
As the EPA AIM Act enforces a strict 700 GWP limit on residential HVAC systems, homeowners face the phaseout of R-410A and the arrival...