On October 19, 2026, Yierp held a Five-Constant Heat Pump Training Seminar, focusing on five-constant comfort systems, heat pump host technology, temperature and humidity control, radiant air-conditioning applications, and system implementation. The event brought together industry partners, dealers, integrators, and technical practitioners to explore how five-constant heat pump systems can deliver more stable, comfortable, and energy-efficient indoor environments.
A five-constant system aims to maintain a balanced indoor climate through coordinated operation of the heat pump host, fresh-air dehumidification, radiant terminals, and intelligent control. Yierp's five-constant comfort targets include:
- Constant temperature: indoor temperature maintained at 22–26°C year-round;
- Constant humidity: relative humidity kept at 40%–60%;
- Constant quietness: indoor noise controlled at ≤40 dB;
- Constant oxygen: CO₂ concentration maintained at ≤800 ppm;
- Constant cleanliness: PM2.5 filtration efficiency ≥95%, formaldehyde ≤0.08 mg/m³, and TVOC ≤0.6 mg/m³.
As a source manufacturer of five-constant heat pump hosts, Yierp has developed two-pipe, four-pipe, and six-pipe five-constant host solutions, covering different residential, commercial, and radiant comfort scenarios.
Yierp Two-Pipe Five-Constant Host
The two-pipe five-constant host is designed primarily for floor temperature regulation. It supports automatic dew-point tracking, variable water temperature, and anti-condensation control, and can be integrated with third-party fresh-air dehumidifiers. This makes it suitable for projects that require flexible system matching and simplified installation.
Yierp Four-Pipe Five-Constant Host
The four-pipe five-constant host provides dual temperature and humidity control with dual water temperature output from a single unit. It features automatic variable water temperature, dew-point tracking for condensation prevention, wireless linkage, and six operating modes. With temperature control accuracy of ±0.5°C, it is suitable for five-constant comfort environments, new three-constant systems, advanced two-supply systems, and radiant air-conditioning applications.
Yierp Six-Pipe Five-Constant Host
The six-pipe five-constant host is designed for ceiling-and-floor radiant five-constant systems, enabling separate control of ceiling and floor zones with triple water temperature output from one host. Based on Yierp's "three-temperature source, ceiling-floor separated temperature" concept, the unit can meet different water temperature requirements for ceiling radiation and floor radiation simultaneously.
Yierp emphasizes that a five-constant comfort system is not defined by a single device, but by the coordinated performance of the host, terminals, fresh-air dehumidification, control strategy, and installation quality. Going forward, Yierp will continue to provide technical training and solution support for dealers and system integrators, helping five-constant heat pump systems achieve more standardized and efficient implementation.
For five-constant comfort, choose Yierp five-constant hosts.
