tank or tankless water heater?
We currently have to tandem water heaters, one being gas one being electrical. They both are over 15 years old. In my area, the utility company offer an energy saving program to convert from elec to gas. By doing that, we get reimbursement for replacing elec. water heater with gas. We are thinking to replace both old ones with either traditional higher efficiency gas heater or tankless gas heater. the furnace/water heater currently sit in the middle of the house in the basement closet. Bath and kitchen lay on each end of the house. So in order for the water to go to bath or kitchen, it has to travel half of the house distance either way. We have a relatively big house > 3000 sqft. We have two concerns with tankless option:
1. How would it work with bath/kitchen layout above? Would we have problem igniting the tankless since the hot water faucet is so far from the heater?
2. would tankless wh supply enough water for a 4-5 people staying during holidays? The worst case is more than 1 people taking shower at the same time using two/three bathrooms.
Thanks for your input. Your opinion is very appreciated.