Hotel Domestic Hot Water and Space Heating: Combined or Separate Systems?

Every hotel retrofit reaches the same fork in the road. You have two thermal loads under one roof: domestic hot water (DHW) for guest showers, kitchens and laundry, and space heat…

Centralized vs Individual Heat Pump Water Heaters for Small Apartment Buildings

A developer refurbishing an eight to twenty unit apartment block in Europe usually reaches the domestic hot water decision late, after the envelope and space heating strategy are …

Heat Pump Water Heater Ducting: Length, Bends and Air Intake Placement

An indoor all-in-one heat pump water heater is, from an airflow point of view, a small air handling unit with a tank attached. It pulls a continuous stream of air across an evapor…

Heat Pump Water Heater at 55°C vs 60°C: Energy Use and Hot-Water Availability

Turning a storage setpoint from 55°C to 60°C looks like a trivial change on a controller screen. It is not. Those five degrees move three things at once: the compressor works agai…

Why Year-Round Efficiency Matters for the Next Generation of European Heat Pumps

Europe’s heat pump market has traditionally been closely associated with the decarbonisation of space heating and the transition away from fossil-fuel heating systems.Heating remai…

How PHNIX Supports European Heat Pump Distributors and Installers

Most manufacturer pages tell you what a heat pump can do. Far fewer tell a distributor or an installing contractor what actually lands on their desk once the purchase order is sig…

Heat Pump Water Heater Installation in a European Family Home: Design and Results

Most articles about domestic hot water stop at the shopping list, then leave you where the real decisions begin. This article does the opposite. It walks through one installation…

R290 Heat Pump Replacing an Oil Boiler: A European Residential Case Study

Most articles about swapping an oil boiler for a heat pump stop at the shopping list. This one follows a single house from the first survey visit to the end of the first heating s…