| Estrogen levels, body thermostats and mood often fluctuate in the perimenopause. |
| Programmable thermostats regulate backup heating and cooling systems, reducing demand when the house is unoccupied or residents are asleep. |
| The newer thermostats are programmable, electronic devices that couple sensors with circuitry to do the job. |
| Many of these units have fans to move the heat, and are also available with remote controls, wall switches or wall-mounted thermostats. |
| Programmable digital thermostats automatically control your home's heating and cooling. |
| Most staff being laid off worked on the factory floor, assembling the thermostats and power regulators. |
