Retrofitting heat recovery into an existing building is different from designing new. Space, duct layout, and control integration usually drive the choice more than peak efficiency.<\/p>\n
| Constraint<\/th>\n | Mejor ajuste<\/th>\n<\/tr>\n |
|---|---|
| Exhaust far from supply<\/td>\n | Bucle de recirculaci\u00f3n<\/td>\n<\/tr>\n |
| No cross-contamination allowed<\/td>\n | Plate or heat pipe<\/td>\n<\/tr>\n |
| Humidity control needed<\/td>\n | rueda de entalp\u00eda<\/td>\n<\/tr>\n |
| Tight mechanical room<\/td>\n | Heat pipe (compact)<\/td>\n<\/tr>\n<\/table>\nStep 3: Integrate Controls<\/h2>\nStep 4: Verify Savings<\/h2>\nBefore commissioning, baseline energy use. After 3\u20136 months, compare to confirm payback matches the model.<\/p>\n A retrofit succeeds on planning and verification as much as hardware. Phase the work to avoid shutting down occupied spaces, and confirm the existing duct static pressure before sizing any core so you do not inherit a high-pressure-drop system. Where the exhaust and supply are far apart, a run-around coil keeps the retrofit feasible without re-ducting. Use a measurement and verification plan based on a recognized protocol so the reported savings survive audit: baseline energy, then compare after a full season. Tie the recovery to the existing controls through dry contacts or a network link so it runs only when needed. Our psychrometric guide<\/a> shows how recovery shifts the air state on the chart.<\/p>\n Do I need to replace the AHU?<\/strong> What is the biggest retrofit risk?<\/strong> |