Understanding Indoor Air Quality
Hot Gas Bypass / Hot Gas Reheat
The commercial Envision series, the most advanced water source heat pump on the market today, is now available with hot gas bypass and/or reheat. The AlpinePure hot gas bypass option is designed specifically to limit the evaporating pressure in the cooling mode to prevent the evaporator coil from forming ice.
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MERV Filters
AlpinePure filters are available in both 1-inch and 2-inch sizes with MERV (Minimum Efficiency Reporting Value) efficiency ratings that vary based on the product line and unit size. MERV is an industry standard which rates the ability of a filter to trap particles 0.3 to 10.0 microns from the air we breathe. WaterFurnace water-to-air units come standard with a MERV 4 or MERV 8, 1-inch filter and have an upgrade option for a MERV 13, 2-inch filter. The MERV 13 filter provides one point towards LEED certification and meets the LEED Green Building criteria for minimum efficiency. Its low initial resistance promotes low energy consumption and provides nearly twice the life of a standard filter.
| Product Line | Sizes | Standard | Upgrade Option |
|---|---|---|---|
| Versatec Base | 0.5 to 6 tons | MERV 4, 1 in. | MERV 13, 2 in. |
| Versatec Ultra | 0.75 to 6 tons | MERV 4, 1 in. | MERV 13, 2 in. |
| Envision² Compact | 0.75 to 6 tons | MERV 4, 1 in. | MERV 13, 2 in. |
| Envision XL | 7 to 25 tons | MERV 4, 1 in. | MERV 13, 2 in. |
| Envision Low Sill Console | 0.75 to 1.5 tons | MERV 4, 1 in. | N/A |
| Envision Console | 0.75 to 1.5 tons | MERV 4, 1 in. | N/A |
