External thermostat fan controller
USRE49383E1 · kind E1 · reissue
Inventors
Key dates
| Filing date | Jun 17, 2021 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Jun 17, 2041 |
Classification
- Technology area (CPC —)General
Abstract
A programmable controller circuit that can be connected directly to the fan switch of any thermostat with a forced air heating and/or cooling system that includes a blower fan for circulating air throughout the home. The controller can be installed with minimal modifications to the existing wiring. The present invention increases the efficiency of the cooling system by evaporating condensate and extracting residual coolness from the thermal mass of the evaporator coils. The present invention can be programmed with a single button. A method of adapting additional fan run time based on compressor run time an AC compressor off time and an AC compressor on time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.