Bosch Heat-pump PH/HH Error Code — Meaning & Repair Cost (2026)
Low discharge superheat protection. Below: the most likely causes, and what the matching repair costs — Estimated national ranges with a metro localizer. Reviewed July 2026.
What PH/HH means
Low discharge superheat protection.
Likely causes, most common first
- Low refrigerant charge
Base: 1 published national repair-cost guide (retrieved 2026-07) · full source registry on the methodology page · Code meaning & causes · Reviewed July 2026
What it usually costs to fix Estimated
PH/HH on a Bosch heat-pump resolves to the heat pump refrigerant leak repair / recharge problem. Bosch parts typically run ×0.95 against the mainstream baseline (Bosch is a newer US ducted-heat-pump entrant that undercuts legacy premium brands to gain share — one contractor review states its IDS 2.0 delivers Mitsubishi Hyper-Heat-level modulation granularity 'at roughly 70% of the installed cost' of a comparable Mitsubishi system — but its smaller, still-growing parts-distribution footprint (explicitly described as 'smaller than Carrier or Lennox') can add 1-2 day waits on non-stocked components in some regions.), and the ranges below already include it.
$195–$1,460 national estimate to fix the fault behind PH/HH (Bosch parts ×0.95). Enter a ZIP to localize.
| Most common repair | Typical total | DIY? |
|---|---|---|
| Minor leak repair + partial recharge | $195–$485 | Pro recommended |
| Moderate leak repair (extensive leak detection + repair + full refill) | $495–$975 | Pro recommended |
| Severe leak repair (coil-area leak, full evacuation + recharge) | $985–$1,460 | Pro recommended |
Plus a typical service-call / diagnostic fee of $75–$150, often credited toward the repair.
Pick a quality tier for a class-typical estimate, or a specific brand to override it (brand adjusts the parts portion only). Enter a ZIP or Canadian postal code to localize to your metro's labor costs. Everything updates without a page reload; no data leaves your browser except the shard lookup.
Base: 3 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · National base range (BLS OEWS May 2025 + BEA RPP 2024) · Reviewed July 2026 · Estimated
Codes are universal — your location changes the repair price, never the code's meaning. See the methodology for the exact localization formula and sources.
Reviewed by a Red Seal–certified appliance technician who also holds a Technical Safety BC gas ticket (Gas-C) and an ODS/halocarbon refrigerant ticket (CFC/HCFC/HFC).