Field notes

Comfort, explained.

Straight answers on heating, cooling and air for Southern California homes — costs, sizing, permits and fixes, from the RIV Comfort team.

Mini Splits · October 28, 2026Mini Split for an ADU in Orange County: Sizing, Cost & PermitsHow to size a ductless mini split for an ADU in Orange County, what installation typically costs, and which permits your city requires — from RIV Comfort. Heat Pumps · October 28, 2026Heat Pump Cost in the Inland Empire (2026 Guide)Realistic 2026 installed prices for whole-home heat pumps in Riverside and San Bernardino counties, what drives the number, and which incentives can help. Repair · October 28, 2026AC Blowing Warm Air? 7 Causes From Free Fixes to Real RepairsSeven reasons an air conditioner blows warm air, ordered from free two-minute fixes to repairs that need a technician — from RIV Comfort, Southern California. Heat Pumps · October 28, 2026Furnace vs Heat Pump in Southern California: 2026 ComparisonGas furnace vs electric heat pump for Southern California homes in 2026 — running costs, comfort, lifespan and incentives compared by RIV Comfort.
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