
GeneralAire 1042-LH
Score: 75/100
AprilAire 720A
Score: 92/100Rankings

The AprilAire 720A is a high-capacity fan-powered evaporative whole-house humidifier designed for large homes up to 6,250 square feet. It delivers 21 gallons per day of humidity using HydroCore technology, which reduces wastewater by 60% while doubling evaporation efficiency. It is widely regarded as the superior choice for large homes, particularly those with heat pumps or tight construction.

The GeneralAire 1042-LH is a bypass evaporative whole-house humidifier designed for homes up to 2,800 square feet. It operates as a flow-through system that utilizes the furnace's warm air to evaporate water through a vapor pad, adding moisture to the home's air with a maximum output of 17 gallons per day. It is a straightforward, low-maintenance solution with minimal electrical needs.
| Attribute | ![]() | ![]() |
|---|---|---|
2,800 sq ft | 6,250 sq ftbest | |
136 pints/day | 168 pints/daybest | |
5 yearsbest | — | |
14 in | 18 inbest | |
18 inbest | 10.5 in | |
14 in | 16.5 inbest | |
| ↓ lower better | 15.21 lbs | 13.75 lbsbest |
24 Vbest | 24 Vbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Controls(1) | ||
Control Type | Manual | Automatic Digital |
Design(4) | ||
Overall Height (in) | 14.0 in | 18.0 in |
Overall Width (in) | 18.0 in | 10.5 in |
Overall Depth (in) | 14.0 in | 16.5 in |
Product Weight (lbs) | 15.21 lbs | 13.75 lbs |
Performance(2) | ||
Coverage Area (sq ft) | 2800 sq ft | 6250 sq ft |
Moisture Output (pints/day) | 136 pints/day | 168 pints/day |
Features(2) | ||
Installation Type | Bypass | Whole-house |
Fan Powered | false | true |


Professional sources highlight the GeneralAire 1042-LH as a robust, energy-efficient solution for medium-to-large homes. Reviewers note its flexible installation options and durable construction as key strengths, while acknowledging that its performance is inherently tied to furnace operation cycles.
No specific consumer feedback or user reviews were found in the provided data sources.




Professional reviewers and editors highlight the AprilAire 720A's industry-leading 21 GPD capacity and its innovative HydroCore technology. It is widely regarded as the superior choice for large homes up to 6,250 square feet, particularly those with heat pumps or tight construction.
Search results lack direct consumer reviews or forum discussions; no common praise or complaints are available from the provided data. Product pages emphasize professional installation requirements, suggesting limited DIY user feedback is present in current sources.