WA Lic. INFINHA841B8 400+ Google reviews
Quick answer
- SEER2 = cooling efficiency; HSPF2 = heating efficiency. Here, weight HSPF2 more.
- A low-ambient rating like "heating to −13°F" describes capability, not a temperature you'll regularly see — it means plenty of margin for our climate.
- Inverter (variable-speed) compressors modulate output instead of switching on/off — better comfort and efficiency in mild, damp weather.
- Ratings assume correct sizing and installation; a great unit installed badly performs like a bad unit.
SEER2 and HSPF2
Both are seasonal averages measured under updated (M1) test conditions that better reflect real ductwork. Higher is better. Premium ductless systems now reach SEER2 ratings in the high 20s to low 30s; quality ducted heat pumps commonly land in the high teens to low 20s. HSPF2 tells you how efficiently the machine heats across a season — the number that dominates a Northwest utility bill.
Low-ambient (cold-climate) ratings
A spec like "100% heating capacity at 5°F" or "operates to −22°F" tells you how the unit behaves as temperatures fall. Every heat pump loses some capacity in the cold; cold-climate designs lose it slower and keep working far below anything Graham or Tacoma normally sees. Treat this as engineering headroom, not a promise about your energy bill.
Why inverters matter more here than almost anywhere
Fixed-speed compressors are either full-on or off. Inverter compressors run anywhere between a whisper and full tilt, matching the home's actual load. In a climate that spends months needing 'a little heat, all day,' that means steadier rooms, quieter operation, gentler starts, and less wear.
The spec that isn't on the sheet: installation quality
Refrigerant charge, line-set length, airflow, and control setup all change delivered performance. This is why we do a Manual J load calculation and commission every system rather than quoting off a brochure number.
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Family owned · WA Lic. INFINHA841B8 · 400+ Google reviews
Common questions
Is a higher SEER2 always worth paying for?
Not automatically in our climate — we have short cooling seasons. Efficiency upgrades that improve heating (HSPF2, inverter operation, proper sizing) usually pay back faster here than chasing maximum SEER2.
What ratings do the Hisense systems Infinity installs carry?
The Hisense HD Series ducted systems are rated up to 20 SEER2 with heating output down to −13°F, and Hisense ductless systems reach SEER2 ratings up to 32 with ultra-low-temperature heating as low as −22°F, depending on the model. We'll match the specific model to your home's load.
Do I need backup heat with a cold-climate heat pump?
Often no in the South Sound, but electric heat strips or a dual-fuel furnace are cheap insurance for rare arctic events, and some homeowners prefer the redundancy. We'll size the backup to your comfort with risk.
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Infinity Heating & Air — licensed WA HVAC contractor (Lic. INFINHA841B8), family-owned in Graham. Last updated July 2026.