In the April What’s Up the following article entitled HVAC Task Force Making Progress appeared. Here is an update to this article following the April 15 Session Meeting.
The HVAC Task Force presented a motion to Session for discussion, and a vote on it will be taken on May 20. The motion was split into two parts.
- Part A included the actions mentioned in the article below to shore up our existing system and improve energy efficiency, including deferred maintenance, improved controls, and a quick but inexpensive solution to excess heat in the Music Room, all estimated to cost up to $84,000 (revised), plus support of the Facilities Committee’s current plan to add insulation to four church buildings (cost unknown). If supported, these actions will be taken in either 2020 or 2021, as conditions allow.
- Part B proposes the electric heat solution described in the article, at an estimated total cost up to $287,000 (revised). This will most likely be split into 4 projects, to be undertaken as the Facilities Committee believes they are necessary and affordable. The boiler examination still has not taken place, but on the assumption that up to 6 years of useful life remains, these projects will be spread out over this time period, following the Part A work. The timing could be adjusted to be longer or shorter based on the boiler examination results.
- An additional motion proposes that a new Working Group be assembled to follow up on EV Charging and Solar possibilities, transitioning from Task Force responsibility. No work is expected in either area in 2020.
It is explicitly stated in the motion that while Session approval of the recommendations is sought, Session commitments could change over time as the church adjusts to our changing world and other church priorities might emerge.
If members of the congregation have any comments or questions, please send them to the Task Force firstname.lastname@example.org and to Session email@example.com. And please let us know if you are interested in having a congregational discussion about these matters as a Zoom meeting. If such a meeting were held in May it is possible that we will have results of the boiler examination.
HVAC Task Force Making Progress (from April What’s Up)
The HVAC Task Force made a report to Session at its March meeting that included some preliminary recommendations. While no action is being taken yet, this is a good time to let the Congregation know where things stand.
There are three big takeaways from the HVAC Task Force Report:
- It is possible our current boiler has more life in it than previously thought, and final recommendations regarding timing of a phased plan to update the HVAC system will not be made until a better picture of this is known.
- For months we were dismayed that there did not appear to be an affordable all-electric solution for our heating system problems. But as our appetite for spending has decreased from the possibility of $1 million at first, through a period when we set $500,000 as the upper limit, it now seems possible to have a phased-in electric solution for about $285,000. Add this to the approximately $79,000 likely needed for deferred maintenance of the distribution portion (in each building) of our current system which would be reused, and the Task Force’s preliminary identified total “not to exceed” figure is $364,000. Such a large project would be implemented over a period of years, depending on church priorities over time (as determined by Session with advice from the Facilities Committee).
- There are measures which should be taken this year to improve energy efficiency, including adding insulation and better controls for optimum use of the current and future systems.
What is this electric solution?
- Based on a report from our energy consultants, it is possible to consider a system of electric heat pump water heaters (HPWH) for each building. These heat pumps could be installed on a building-by-building basis, or perhaps a building cluster like the Lounge and Chapel, providing an alternate source of heat for the hot water that currently runs in each building from the central boiler room and is ultimately converted to heat. This excludes Classrooms 1-3, Westminster House, and the Scout House. The central gas boiler would no longer be the heat source if all buildings are included in the plan.
- It is possible to phase an installation of individual heat pumps over a period of years. Whenever a building is added, the water to that building from the central loop would be capped. When the last building system is completed the central gas boiler can be abandoned. As progress is made, it will be possible to have heat in some retrofitted buildings without having to have the central boiler on.
What is a heat pump water heater(HPWH)?
A heat pump is an electrical device that takes heat from one area and moves it to another. They use the same principle that air conditioning units use. Heat pump water heaters do this for water, and are either air-sourced or water-sourced. For us, air-source units would transfer heat to the water from the outside air. Refrigerant is used, but it is all permanently encased in the unit itself and would not circulate in the buildings. Heat pumps tend to be about three times more efficient in converting fuel to heat than a central boiler.
The Task Force is having the boiler serviced and examined as soon as we can get the work scheduled. Unfortunately, this is being delayed, and it was not possible to have had it done earlier, as the boiler was in use. Once we have a report about the expected remaining useful life of the boiler, the Task Force will make recommendations to Session of the overall scope and cost of this project, including deferred maintenance and new controls, and the general time frame. Whatever is ultimately approved will go to the Facilities Committee for eventual implementation over a period of years, including design and bidding. The expectation is that this project could be financed with existing church resources, avoiding loans and a capital campaign, but there still may well be some difficult decisions relating to priorities. The congregation should know that the Task Force and Session are well aware of the highly unusual financial conditions impacting our members and the nation just now, and of course future flexibility for changing circumstances must be part of our thinking and actions.
What about Solar and Electric Vehicle Charging?
The Task Force just got a report from Palo Alto about EV Charging and will be digesting that soon. A few solar proposals might be coming in. The HVAC decisions can be made independently from these.
If members of the congregation have any comments or questions, please send them to firstname.lastname@example.org. If there is interest in a congregational discussion about these matters it can be arranged – Zoom or otherwise – depending on the timing. But it will probably make sense to schedule this after the boiler examination.