Budget Water Harvesting

Budget water harvesting assumes the expensive refrigerant loop already exists in the garage or utility closet. This pillar documents the inexpensive half of the project: pumps sized for cartridge pressure drop, float switches that fail safe, tubing that will not leach plasticizers, and test kits that catch biofilm before anyone pours a glass. The emphasis is operable checklists for families who cannot justify a $2,000 atmospheric water appliance but still want traceable drinking water when municipal supply tastes wrong.

Quick answer: estimate daily yield with the condensate calculator, design the sanitation train, then size opaque storage—never invert that order.

Guides in this pillar

Choosing the Right Diaphragm Pump for DIY Water Filtration
Flow rate, head pressure, and duty cycle for 12 V pumps pushing water through multi-stage cartridges.
Algae-Free Storage: How to Safely Store Harvested Drinking Water
Light exclusion, HDPE tank sizing, and float-switch automation for long-term condensate storage.

Other pillars

Air-to-Water Systems

FAQ

No for long-term drinking water. Light plus nutrients enables algae even at room temperature; use opaque HDPE or sleeved PET.

Lower shock hazard during leak tests and compatibility with small solar backups, at the cost of shorter duty cycles versus 120 V boost pumps.

A calibrated TDS meter plus annual coliform mail-in test beats guessing from taste alone.

Explainers link to the master parts list decision page once at the end; SKUs stay centralized there.