Nunc Pro Tunc. The Latin term nunc pro tunc translates literally to ânow for then.â This term is commonly used in the U.S. legal system to signify that a court ruling or order applies retroactively to a ruling made at an earlier date. The most common use of nunc pro tunc is to correct clerical errors, or accidental omissions made by the court in a written order or ruling. To explore this concept, consider the following nunc pro tunc definition.
1 The typical gas furnace cost is $3,000 to $6,000 installed, although higher efficiency models and/or complex installations could push the cost up to $7,500 to $10,000 or more. 2  Oil furnace cost is roughly $2,500 to $5,000 installed, but similar to gas furnace prices, itâs not unheard of to spend $10,000+. Efficiency: Furnace efficiency measures how much fuel a unit converts to heat, and how much is lost up the chimney. 2  The national minimum efficiency standard is 78%, while some new models are up to 98.2% efficient. 3  The latter cost more, but will cut fuel costs and are better for the planet.
First there is the cost of the new HVAC system. This cost can range between $750 -$3000 depending on the brand, size and the model. The average cost for a new furnace is approximately $1,400 for the unit and includes no other elements costs which are used for installing the furnace.