Spruce | 2,472 followers on LinkedIn. Tools to help ambitious heat pump installers run their business without the current pain, hassle, and manual processes. | We’re building tools to help ambitious heat pump installers run their business without all the pain, hassle, and manual process that they have to deal with at the moment. We believe the only way to seriously accelerate the roll out of heat pumps, let alone hit 600,000 a year by 2028, is to put the needs of heating engineers and installation businesses front and centre. Our Estimate Tool helps handle enquiries – allowing installers to respond in minutes not days, and separating the serious enquiries from the time-wasters.